HP StorageWorks EMA12000 Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37
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- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 1
-UG. C02/387403-001 September 1998 The DS-BA370 series UltraSCSI RAID rack-mountable enclosure is the basic building block of UltraSCSI RAID subsystems. This guide and its related publications comprise the basic documentation set for these subsystems. Compaq Computer Corporation Houston, Texas - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 2
September 1998 While Compaq Computer Corporation believes the information included in this publication is correct as of the date of publication, it is subject to change without notice. Compaq makes no representations that the interconnection of its products in the manner described in this document - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 3
Table of Contents Preface xiii Manufacturer's Declarations xix Chapter 1, Introducing the UltraSCSI RAID Enclosure An UltraSCSI Bus Overview 1-4 Product Description 1-5 UltraSCSI RAID Subsystem 1-7 EMU 1-7 PVA 1-8 Master Enclosure 1-8 Master EMU 1-8 Expansion Enclosure 1-8 Expansion EMU - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 4
Table of Contents Chapter 2, Operating the UltraSCSI Enclosure UltraSCSI Configuration Rules 2-1 General 2-1 UltraSCSI RAID Controllers 2-2 UltraSCSI Nodes 2-3 UltraSCSI Enclosures 2-4 Enclosure Addressing 2-4 Starting the Subsystem 2-5 Applying Power 2-6 Turning On the Subsystem 2-7 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 5
Table of Contents Maintenance Terminal Connector 3-6 Blower Fault LEDs 3-6 Configuring the EMU 3-7 Connecting the EMU Communication Bus 3-7 EMU Firmware 3-8 EMU Firmware Versions 1.0 and 1.1 3-9 EMU Firmware Version 1.2 3-9 Installing EMU Firmware Updates 3-10 Setting the Temperature Sensors - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 6
Table of Contents Error Reporting 5-5 Incompatible I/O Modules 5-5 TERMPOWER Errors 5-6 Rules for Expanding an UltraSCSI Bus 5-7 Cabling an UltraSCSI Subsystem 5-9 Shutting Down the Subsystem 5-10 Cabling a Two-Enclosure Subsystem 5-12 Turning On the Subsystem 5-15 Cabling a Three-Enclosure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 7
Table of Contents Guidelines for Replacing a Disk Drive SBB 7-6 The SBB Connector 7-6 Prerequisites for Replacing a Disk Drive SBB 7-7 Disk Drive SBB Replacement Methods 7-7 Hot Swap 7-8 Warm Swap 7-8 Cold Swap 7-8 Replacing a Disk Drive SBB 7-9 Handling a Disk Drive SBB 7-9 Procedures for - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 8
Table of Contents Loading the Microcode C-4 Restarting the Controller C-6 Glossary Glossary-1 viii UltraSCSI RAID Enclosure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 9
List of Figures Figure 1-1 DS-BA370 Series UltraSCSI Enclosure 1-1 Figure 1-2 Typical DS-BA370 Applications 1-3 Figure 1-3 Typical Enclosure Bus and Device Addressing 1-6 Figure 1-4 DS-BA370 Status LEDs Locations 1-11 Figure 1-5 RA7000 Status LEDs Locations 1-11 Figure 2-1 Power Supply Bezel - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 10
List of Figures Figure 4-7 Expansion Enclosure Address 3: Shelf and SCSI Bus IDs 4-10 Figure 5-1 Single-Ended I/O Module 5-1 Figure 5-2 I/O Module Location 5-2 Figure 5-3 I/O Module Numbering 5-2 Figure 5-4 I/O Module TERMPOWER LEDs 5-6 Figure 6-1 Enclosure Power System 6-1 Figure 6-2 AC Input - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 11
Table 1-1 UltraSCSI Subsystems Capacities 1-7 Table 2-1 Compaq-Supported PVA SCSI ID Switch Settings 2-5 Table 2-2 Turning On Voltage Ranges 4-6 Table 4-2 Setting the Enclosure Configuration 4-7 Table 4-3 Compaq-Supported PVA SCSI ID Switch Settings 4-8 Table 4-4 Turning Off the DC Power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 12
List of Tables Table 5-2 UltraSCSI Bus Expansion Rules 5-8 Table 5-3 Preliminary Cabling Procedures 5-9 Table 5-4 UltraSCSI Bus Cables 5-10 Table 5-5 Shutting Down the UltraSCSI Subsystem 5-11 Table 5-6 Installing Two-Enclosure Subsystem Cables 5-12 Table 5-7 Turning On the UltraSCSI Subsystem - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 13
StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide describes the functions, operations, components, configurations, assembly, either a data center cabinet or a departmental server cabinet. Structure Manual organization is as follows: Chapter 1 This chapter describes the UltraSCSI - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 14
Preface Chapter 4 This chapter describes the power verification and addressing (PVA) assembly operation, functions, uses, configuration, and replacement procedures. Chapter 5 This chapter describes the single-ended input/output (I/O) module operation, functions, uses, configuration, and replacement - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 15
on a glossary term within a chapter activates the link. italic type Italic type emphasizes important imformatioin and indicates complete titles of manuals. Italic type within the glossary indicates a cross-reference. courier type Courier type indicates a keyboard command or screen display data - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 16
Order Number HSZ70 Array Controller HSOF Version 7.0 CLI Reference Manual HSZ70 Array Controller HSOF Version 7.0 Configuration Manual HSZ70 Array Controller HSOF Version 7.0 Service Manual HSx801 Array Controller ACS Version 8.n2 User's Guide HSx801 Array Controller ACS V8.x4 Configuration and CLI - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 17
Specific Release Notes See system-specific "Getting Started" manual Improving UltraSCSI RAID Subsystem Operation EK-BA370-UP Installing Bus Cable Ferrite Bead EK-SWXES-IG StorageWorks Solutions SBB User's Guide EK-SBB35-UG UltraSCSI Subsystem Standby Power Operation EK-POWER-IG UltraSCSI - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 18
- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 19
Manufacturer's Declarations This section discusses electromagnetic compatibility and accoustic noise declarations. Electromagnetic Compatibility This CE-Mark Class A certified product can be installed in a commercial or an office environment. WARNING! This is a Class A product. In a domestic - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 20
Manufacturer's Declarations Acoustic Noise Declarations Compaq® declares that the acoustic values of this product are as shown in Table 1 and Table 2. Table 1 Acoustics - Declared Values per ISO 9296 and ISO 7779 Product Sound Power Level LWAd, B Sound Pressure Level LpAm dBA (bystander - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 21
Manufacturer's Declarations Table 2 Schallemissionswerte - Werteangaben nach ISO 9296 und ISO 7779/DIN EN27779 Gerät Schalleistungspege l LWAd, B Schalldruckpegel LpAm, dBA (Zuschauerpositionen) RAID Array 7000 Subsystem (DS-SWXRA-HA) with: 2 - ac input boxes (DS-BA35X-HE) 8 - 180 W shelf power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 22
- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 23
1 Introducing the UltraSCSI RAID Enclosure The Compaq StorageWorks™ UltraSCSI RAID (redundant array of independent disks) enclosure (DS-BA370 series) shown in Figure 1-1 is the basic building block for Compaq single-ended UltraSCSI RAID subsystems. Figure 1-1 DS-BA370 Series UltraSCSI Enclosure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 24
are not interchangeable. Installing incompatible products in a StorageWorks subsystem could result in degraded operation or noncompliance with country-specific certifications. See Figure 1-2 for the Compaq-supported enclosure applications. 1-2 UltraSCSI RAID Enclosure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 25
0 1 0 Introducing the UltraSCSI RAID Enclosure Figure 1-2 Typical DS-BA370 Applications CXO6264A UltraSCSI RAID Enclosure 1-3 0 1 0 0 1 0 0 1 0 0 1 0 0 1 0 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 26
other words, an UltraSCSI bus segment corresponds to what Fast SCSI referred to as an entire SCSI bus. As in Fast SCSI, a bus segment only supports devices of the same type as its terminators. Do not, for example, attempt to use a differential SCSI bus device on a single-ended SCSI bus segment - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 27
Introducing the UltraSCSI RAID Enclosure Product Description The UltraSCSI enclosure is a rack-mountable storage subsystem that accommodates the following components: • Depending upon the configuration, a minimum of zero, or a maximum of two, UltraSCSI controllers with cache modules1, such as the DS - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 28
Introducing the UltraSCSI RAID Enclosure Expansion enclosures have filler panels installed in the controller and cache module slots that improve air flow and reduce electromagnetic interference (EMI) radiation. The blank panels in the controller B and cache module B locations improve air flow and - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 29
24 3 6 24 Total Disk Drives 24 48 72 Note Not all array controllers support configurations with expansion cabinets. Refer to the array controller documentation to ensure the controller supports expanded configurations. EMU The EMU monitors the status of the UltraSCSI RAID enclosure to include - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 30
Introducing the UltraSCSI RAID Enclosure PVA Each PVA functions only with its host enclosure and EMU. There is no master PVA in the UltraSCSI RAID subsystem. The PVA has the following primary functions: • Allows the user to select the enclosure UltraSCSI bus ID. • Enables the user to place the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 31
manages SCSI bus communications. Controllers typically differ by the type of interface to the host and provide functions beyond those the devices support. A host port adapter connects the host to the controller. Other terms commonly used for the SCSI bus controller include array controller, host - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 32
cache modules. Cache Module A storage buffer that is required to support bus controller1 operations. ECB The ECB provides backup power to the Enclosure Status When any of the multiple error detection circuits determine there is a problem, an audible alarm can sound and one or more sets of status LEDs - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 33
Introducing the UltraSCSI RAID Enclosure Figure 1-4 DS-BA370 Status LEDs Locations System OK (green) Fault (amber) Figure 1-5 RA7000 Status LEDs Locations System OK (Green) Fault (Amber) 0 1 0 1 1. System OK (green) CXO5751A CALLOUTS For Both Figures 2. Fault (amber) CXO5451B Options The - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 34
Introducing the UltraSCSI RAID Enclosure Redundant Power Supply Configuration Adding three power supplies and a second ac input box provides significantly more power redundancy than the standard configuration. The redundant power supply configuration uses a single ac power source. A system power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 35
effective and efficient method of ensuring continuous subsystem operation in the event of a component failure. UltraSCSI Bus Expansion Some controllers support expanding the UltraSCSI bus from the master enclosure to two expansion enclosures. Refer to the array controller documentation to determine - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 36
- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 37
provided with each system. This chapter supplements and expands on this information. Other chapters in this manual contain detailed information about individual component functions, operations, error conditions, and so forth. UltraSCSI Configuration Rules Proper operation of the subsystem requires - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 38
of 12 valid DS-BA370 SCSI bus IDs-0 through 3 and 8 through 15. • A DS-BA370 series UltraSCSI bus does not support 5.25-inch devices. • A DS-BA370 series enclosure does not support narrow devices. • Only UltraSCSI devices have a maximum transfer rate of 40 MB/s. • Installing a FAST 10 storage device - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 39
controller only. • SCSI bus ID 6 is reserved for the controller only. • SCSI bus IDs 4 or 5 cannot be used. • 5.25-inch devices are not supported. • The valid device SCSI bus IDs are device type dependent, meaning: - An UltraSCSI device can use device addresses 0 through 3 or 8 through 15. - A wide - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 40
Operating the UltraSCSI Enclosure UltraSCSI Enclosures The following configuration rules apply to UltraSCSI RAID subsystem enclosures: • The only compatible ac input box is model DS-BA35X-HE. • The only compatible power supply is model DS-BA35X-HH (180 W). The bezel label shown in Figure 2-1 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 41
Operating the UltraSCSI Enclosure See Table 2-1 for the Compaq-supported PVA SCSI ID switch settings. Table 2-1 Compaq-Supported PVA SCSI ID Switch Settings Total Number of Enclosures 1 2 3 Master Enclosure 0 0 0 First Expansion None 2 2 Second Expansion None None 3 Starting the Subsystem - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 42
Operating the UltraSCSI Enclosure Applying Power Initial power application is a matter of turning on the ac input boxes located in the lower left and right corners of the enclosure (see Figure 2-2, labels A and B). Pressing the I on the ac power switch applies ac power only to the shelf power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 43
Operating the UltraSCSI Enclosure Turning On the Subsystem After completing subsystem assembly, expansion, or movement of the subsystem, complete the procedure in Table 2-2 to turn it back ON. Table 2-2 Turning On the Subsystem Power 1. If there are no expansion enclosures, go to step 2. If there - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 44
Operating the UltraSCSI Enclosure Shutting Down the Subsystem Shutting down the subsystem involves: • Clearing the cache module • Shutting down the controller • Either turning OFF the dc power for the subsystem (entering the standby power mode) or going one step further and turning OFF the ac input - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 45
Operating the UltraSCSI Enclosure Using Standby Power Mode Complete the procedure in Table 2-3 to turn OFF the dc power distribution, placing the subsystem in standby power mode. Complete the procedure in Table 2-4 to restore dc power within the enclosures. Table 2-3 Turning Off the DC Power 1. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 46
Operating the UltraSCSI Enclosure Table 2-4 Restoring the DC Power 1. If there are no expansion enclosures, go to step 3. 2. If there are expansion enclosures, momentarily press the EMU alarm control switch (CALLOUT 1) on each expansion enclosure. 123 4 CXO6302A 3. Momentarily press the EMU alarm - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 47
Operating the UltraSCSI Enclosure Table 2-5 Turning Off the Subsystem Power 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 48
Operating the UltraSCSI Enclosure Fault Detection Fault detection involves identifying errors and providing an indication to the user for analysis. The following sections address how faults are identified, descriptions of status LED indications, and in some cases, possible corrective actions. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 49
enclosure power supplies and blowers. Loss of either a dc voltage or a blower creates an error condition. The enclosure notifies the user of the problem by sounding an audible alarm and changing the status LED displays. When the enclosure is mounted in a data center cabinet or a departmental server - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 50
Operating the UltraSCSI Enclosure Figure 2-3 DS-BA370 Status LEDs Locations 1 2 Figure 2-4 RA7000 Status LEDs Locations 1 2 0 1 0 1 1. System OK LED CXO5751B CALLOUTS For Figures 2. System fault LED CXO5451C CALLOUT 1 is the system OK LED and is green. Callout 2 is the system fault LED and - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 51
There are one or more failed components: 1. Observe the EMU front panel to see if there is an overtemperature condition, a blower problem, or a power problem. Replace the defective blower or power components. 2. Observe individual disk drive SBBs for an error condition. 3. Check the array controller - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 52
Operating the UltraSCSI Enclosure SBB Shelf Status Indicators SBB shelf status indicators are provided by shelf power supplies and disk drive SBBs. Power Supply Status LEDs The two green LEDs on each power supply (see Figure 2-5) display the blower, the power bus, and the individual power supply - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 53
Operating the UltraSCSI Enclosure Removal of a disk drive SBB device is automatically sensed by the array controller. When installing a replacement device in a configured subsystem, the array controller ensures that the replacement device type is identical to the one removed. Only after establishing - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 54
Operating the UltraSCSI Enclosure Controller Shelf Status Indicators Controller shelf status indicators are provided by the array controllers, EMU, PVA, and I/O modules. Typical Controller Status LEDs The operator control panel (OCP) status LEDs (see Figure 2-7) display the controller status. For - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 55
Operating the UltraSCSI Enclosure EMU Status LEDs The EMU status LEDs (see Figure 2-8) have multiple functions (see Chapter 3). Figure 2-8 EMU Status LED Locations Figure CALLOUTS 123 4 1. System fault LED (amber) 2. Temperature fault LED (amber) 3. Power status LED CXO6302A (green) 4. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 56
Operating the UltraSCSI Enclosure I/O Module LEDs Each I/O module (see Figure 2-10) has two green status LEDs that display the status of both the internal (CALLOUT 2) and external (CALLOUT 1) SCSI bus terminator power (TERMPOWER). Whenever TERMPOWER is present, the applicable LED (internal or - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 57
3 Environmental Monitoring Unit The primary function of the EMU (Figure 3-1) is to monitor, process, report, and display power distribution, temperature, blower, configuration, SCSI addressing, I/O module, communications, and microcode status information. The EMU and the array controller exchange - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 58
Environmental Monitoring Unit Product Description The EMU detects enclosure error conditions and configuration faults, and then notifies the user of existing or impending failures, using one or more of the following error reporting systems: • EMU LEDs • EMU audible alarm • Error messages on the host - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 59
Environmental Monitoring Unit Caution Some array controllers bypass the standby power mode functionality from the PVA standby power switch. Refer to the array controller documentation for availability of this feature. Note An overtemperature condition (greater than 50°C) causes the EMU to turn the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 60
Environmental Monitoring Unit I/O Module Status The EMU verifies that the six I/O modules are present, properly installed, and communicating with the backplane, and that TERMPOWER is at the correct level. The EMU reports an error condition whenever any one of these conditions are not met. The EMU - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 61
Environmental Monitoring Unit EMU Front Panel The EMU user interface controls, connectors, and LED displays are on the front panel (see Figure 3-3). The following sections describe the function of each component. Figure 3-3 EMU Major Component Locations 1 2 34 5 67 CXO5774A Figure CALLOUTS 1. EMU - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 62
Environmental Monitoring Unit Temperature Fault LED If either the intake or exhaust air temperature exceeds user-defined temperature setpoints, this amber LED (CALLOUT 3) turns ON. The LED remains ON until the overtemperature condition is corrected. Power Status LED This green power status LED ( - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 63
Environmental Monitoring Unit Configuring the EMU Configuring the EMU requires connecting the EMU-EMU communications bus and using the command line interpreter (CLI) set emu command. This command establishes operating temperature set points and desired blower speed operating mode (high-speed or - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 64
Environmental Monitoring Unit Table 3-1 EMU Communication Cables Description Length Meters Feet 8-conductor 24 AWG, PVC, round 0.5 1.6 cable assembly with: 1.0 3.3 2 - 8 position (8MP) locking, 3.0 9.8 plug connectors 4.0 13.1 Part Number BN26M-0E BN26M-01 BN26M-03 BN26M-04 CXO5747A - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 65
Environmental Monitoring Unit Caution For EMU firmware versions 1.0 and 1.1, the command set emu sensor_n_setpoint=default cannot be used. This command establishes a temperature set point that is too low for proper operation and might result in an erroneous subsystem alarm. Removing and replacing - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 66
are: • Sensors 1 and 2 - 47 • Sensor 3 - 37 Installing EMU Firmware Updates EMU firmware updates are installed by Compaq field service personnel. Appendix C provides general microcode installation procedures. Setting the Temperature Sensors Three temperature sensors are found in each UltraSCSI RAID - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 67
Environmental Monitoring Unit Note For detailed instructions about using the set emu commands, refer to the array controller CLI documentation. Table 3-2 EMU Set Point Temperature Conversions °F °C °F °C °F °C °F °C °F °C 32 0 50 10 68 20 86 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 68
Environmental Monitoring Unit Table 3-3 Temperature Set Point Rules-EMU Firmware Versions 1.0 and 1.1 (Continued) 4. EMU firmware versions 1.0 or 1.1 cannot use the set emu sensor_n_setpoint=default command. Instead, the following command is required: set emu sensor_n_setpoint=nn (where nn is the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 69
Environmental Monitoring Unit Note For detailed instructions about using the set emu commands, refer to the array controller documentation. Compaq recommends using the set emu fanspeed=automatic command, allowing individual EMUs to - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 70
Fault Code Reporting section within this chapter. EMU Status Reporting The EMU processes subsystem status reports and notifies the user of problems via an EMU audible alarm and EMU status LEDs. Figure 3-5 identifies the numerous EMU status LEDs. Figure 3-5 EMU Status LEDs 1 4 2 3 8765 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 71
Environmental Monitoring Unit • Fault conditions-involves a subsystem configuration problem, such as a Boot ROM checksum failure. If a . Whenever the audible alarm sounds, check the EMU status LEDs to determine the problem. Caution If the audible alarm sounds, but the status LEDs do not indicate - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 72
the error condition or the error condition code stored by the EMU. The only way to clear a stored error condition code is to correct the problem. If the enclosure is in standby power mode, the alarm control switch functions as an enclosure power switch. Press the alarm control switch on each - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 73
Environmental Monitoring Unit Monitoring Power Supply Operations Even with four operational power supplies, it is possible that a power supply problem might cause one or both of the dc voltages to be too low. Both the PVA and EMU monitor power supply operations to ensure that - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 74
• Enclosure status associated with each display • A probable cause for the detected error condition • Action recommended to correct the problem Note Presenting all possible LED display combinations is not practical in this document. Therefore, Table 3-7 lists only a representative sampling - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 75
Environmental Monitoring Unit Table 3-7 EMU Status Displays (Continued) Nonoperational Enclosure 8765 4321 CXO5780A Probable Cause 1-Either +5 V dc or 12 V dc out of range. Observe the individual power supply status LEDs to determine the defective power supply and replace it. Probable Cause 2- - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 76
Environmental Monitoring Unit Table 3-7 EMU Status Displays (Continued) Configuration Error (Example 1) 8765 4321 CXO5783A Probable Cause 1-Configuration error. See the Configuration Fault Code Reporting section for the specific error condition. Probable Cause 2-Slave EMU cannot communicate with - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 77
Environmental Monitoring Unit Table 3-7 EMU Status Displays (Continued) Overtemperature Condition 8765 4321 CXO5779A Probable Cause 1-A temperature in one or more enclosures is above the user specified limit. Determine and correct the cause of this condition quickly to prevent an overtemperature - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 78
fault codes. For a detailed explanation of possible fault codes, see Table 3-8. The numbered corrective actions represent the sequence to follow to resolve the problem. . EMU Fault Code Displays Fault Code, Cause, Corrective Action EMU LED Display Fault Code 01 One of the following Boot ROM error - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 79
Environmental Monitoring Unit Table 3-8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 02 Both microcode images are bad. 1. Load microcode image into the EMU from a PC. 2. Replace the EMU. Fault Code 03 Either a PVA SCSI ID switch setting is - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 80
Fault Code 06 One or more temperature sensors indicate an "invalid" temperature-one that is greater than 49°C (120°F). 8765 4321 CXO5765A 1. Replace the EMU. 2. Instruct field service that temperature sensors need replacing. 3-24 UltraSCSI RAID Enclosure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 81
Environmental Monitoring Unit Table 3-8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 07 Invalid configuration. Requires an array controller-specific action (see the array controller documentation). 8765 4321 CXO5766A Fault Code 08 Two PVA - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 82
Environmental Monitoring Unit Table 3-8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 0A No PVA is installed. Install a PVA. 8765 4321 CXO5769A Fault Code 0B Controller fault. Requires an array controller-specific action (see the array - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 83
Environmental Monitoring Unit Table 3-8 EMU Fault Code Displays (Continued) Fault Code, Cause, Corrective Action EMU LED Display Fault Code 0E EMU memory test failed. Replace the EMU. 8765 4321 CXO5773A Fault Code 0F Less than four operational power supplies remain. Replace the defective - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 84
Environmental Monitoring Unit Replacing an EMU Complete the procedure in Table 3-9 to remove an EMU and complete the procedure in Table 3-10 to install an EMU. Table 3-9 Removing an EMU 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 85
Environmental Monitoring Unit Table 3-9 Removing an EMU (Continued) 6. Pull the EMU extractor latches outward and remove the EMU. Table 3-10 Installing an EMU 1. Verify that the EMU is a model DS-BA35X-EB. CXO-5497A-MC 2. Align the EMU in the top, left-hand slot (CALLOUT 1) and insert it. CXO- - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 86
Environmental Monitoring Unit Table 3-10 Installing an EMU (Continued) 3. Pull the EMU extractor latches outward. Push the EMU into the slot until the extractor latches engage the enclosure, then push the extractor latches inward to seat and secure the EMU. 4. If there are no expansion enclosures, - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 87
the user, and in some instances, the array controller, that a problem exists. The array controller can identify and display information about some problems. The PVA and EMU status LEDs indicate possible root causes of problems. Figure 4-1 PVA CXO-5737A Caution Proper operation of an UltraSCSI RAID - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 88
Power Verification and Addressing The PVA and EMU mount next to each other in the enclosure-the EMU (CALLOUT 1) is on the left and the PVA is on the right (CALLOUT 2) as shown in Figure 4-2. Figure 4-2 PVA Location Figure CALLOUTS 1. EMU 2. PVA 1 2 CXO5754B Product Description Figure 4-3 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 89
the following: • Monitors the enclosure EMU status and notifies the user when the EMU is missing. • Allows the user to select a Compaq-supported device SCSI bus address (device ID) for each enclosure. • Ensures at least four operational power supplies are in the enclosure. • Notifies the array - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 90
Power Verification and Addressing This action-removing power from the enclosure-duplicates an EMU function and ensures optimum subsystem performance and integrity. PVA Operation Most PVA operations occur automatically and do not require user intervention. The following sections define major PVA - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 91
bus IDs for all devices in the enclosure. This switch has eight (0 through 7) positions. Caution To preclude SCSI bus addressing conflicts, Compaq only supports PVA SCSI ID switch settings of 0, 2, and 3. Always set the master enclosure PVA SCSI ID switch setting to 0. UltraSCSI RAID Enclosure 4-5 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 92
Power Verification and Addressing Monitoring Power Supply Operations Even with four operational power supplies, it is possible that a power supply problem might cause one or both of the dc voltages to be too low. Both the PVA and the EMU monitor power supply operations to ensure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 93
enclosure addresses. Caution All devices on the same SCSI bus must have a unique SCSI bus ID. To preclude SCSI bus addressing conflicts, Compaq only supports PVA SCSI ID switch settings of 0, 2, and 3. If the PVA SCSI ID switch setting is changed for an enclosure, the controllers must be RESET - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 94
Power Verification and Addressing Table 4-3 Compaq-Supported PVA SCSI ID Switch Settings Total Number of Enclosures 1 2 3 Master Enclosure 0 0 0 First Expansion None 2 2 Second Expansion None None 3 Master Enclosure Address The master enclosure PVA - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 95
enclosure. • 3 - Used for a second expansion enclosure. Caution To preclude SCSI bus addressing conflicts, Compaq array controllers do not support enclosure address settings of 1, 4, 5, 6, or 7. Figure 4-6 Expansion Enclosure Address 2: Shelf and SCSI Bus IDs 1 Figure CALLOUT 123456 1. SCSI - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 96
Power Verification and Addressing Figure 4-7 Expansion Enclosure Address 3: Shelf and SCSI Bus IDs 1 Figure CALLOUT 123 456 1. SCSI bus 15 3 14 CXO-4843A-MC 13 12 CXO5777B Implementing the Standby Power Mode A major function of the PVA is implementing the standby power mode. This mode - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 97
Power Verification and Addressing Table 4-4 Turning Off the DC Power Distribution 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 98
Power Verification and Addressing Table 4-5 Turning On the DC Power Distribution 1. If there are no expansion enclosures, go to step 3. 2. If there are expansion enclosures, momentarily press the EMU alarm control switch (CALLOUT 1) on each expansion enclosure. 123 4 CXO6302A 3. Momentarily press - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 99
Power Verification and Addressing Table 4-6 Removing a PVA (Continued) 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 100
Power Verification and Addressing Table 4-6 Removing a PVA (Continued) 5. Note the enclosure address setting (0, 2, or 3) on the PVA SCSI ID switch (CALLOUT 3). 1 23 CXO5821A 6. Pull both extractor latches outward and remove the PVA. Table 4-7 Installing a PVA 1. Verify that the PVA being installed - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 101
Power Verification and Addressing Table 4-7 Installing a PVA (Continued) 3. Pull the PVA extractor latches outward. Push the PVA into the slot until the extractor latches engage the enclosure, then push the extractor latches inward to seat and secure the PVA. 4. Ensure that the PVA SCSI ID switch - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 102
- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 103
5 Single-Ended I/O Module The single-ended I/O module (see Figure 5-1) performs two functions: • Provides termination for both the internal and external SCSI buses • Establishes SCSI bus communications between enclosures Figure 5-1 Single-Ended I/O Module CXO5816A Caution I/O modules provide - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 104
an UltraSCSI RAID subsystem with more than one enclosure. Refer to the array controller documentation to ensure that the controller supports expanded configurations. Six I/O modules mount on the bottom rear (see Figure 5-2, CALLOUT 1) of each enclosure. These modules connect the array controller - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 105
Single-Ended I/O Module I/O Module and Expansion Cable Error Conditions Removal of an I/O module causes the EMU to report the following error conditions to the controller: • Installation of different I/O modules • Loss of TERMPOWER Either of these error conditions might cause the controller to cease - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 106
Single-Ended I/O Module Controlling the Internal SCSI Bus The I/O module controls the internal SCSI bus in the following manner: • Isolates the internal SCSI bus from the external SCSI bus • Provides single-ended SCSI bus termination for each internal bus • Disconnects the internal SCSI bus from the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 107
I/O modules • All I/O modules are not the same type When the EMU detects an I/O module error condition, it automatically reports the problem to the array controller. Any operational controller will automatically turn OFF without implementing procedures to clear the cache module. The result is that - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 108
-ended buses. Therefore, use only single-ended I/O modules (DS-BA35X-MN). The enclosure does not support the following conditions: • Improperly installing a single-ended I/O module • Installing fewer than six single-ended I/O modules • Installing a termination I/O module • Installing a differential - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 109
Table 5-1 for possible causes of TERMPOWER problems. Table 5-1 TERMPOWER Problems TERMPOWER Error Internal External Possible Causes I/O Note Wide UltraSCSI supports a maximum of 16 devices per bus (2 array controllers and 14 disk drives). However, Compaq does not support any configuration with - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 110
Single-Ended I/O Module Caution The Compaq UltraSCSI controller does not support connecting or disconnecting a SCSI bus cable when both data and power are present on the connector-a "hot swap." Only connect or disconnect SCSI bus cables - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 111
or the first expansion enclosure. Before beginning any cabling installation, complete the preliminary procedures in Table 5-3. Caution Not all array controllers support an UltraSCSI RAID subsystem with more than one enclosure. Refer to the array controller documentation to ensure the controller - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 112
Single-Ended I/O Module Table 5-4 UltraSCSI Bus Cables Description 68-conductor SCSI cable with: 2 - VHDCI straight plug connectors with jack screws Length Meters 0.3 0.5 1.0 1.5 2.0 Feet 1.0 1.6 3.3 4.9 6.6 Order Number BN37A-0C BN37A-0E BN37A-01 BN37A-1E BN37A-02 CXO5702A Shutting Down the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 113
Single-Ended I/O Module Table 5-5 Shutting Down the UltraSCSI Subsystem 1. Clear the cache module and shut down the array controller per the array controller documentation. 2. If there are no expansion enclosures, go to step 3. If there are expansion enclosures, press and hold the PVA standby power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 114
the UltraSCSI subsystem. 2. Use a screwdriver to loosen two spring-loaded mounting screws on the I/O module. 3. Grasp the I/O module by the cable support bracket and pull it straight outward until removed from the enclosure shroud. 4. Repeat steps 2 and 3 for all the I/O modules. CXO5816A 5-12 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 115
connector. Tighten both cable connector thumb screws to fully seat the connector. A CXO5854B 6. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 7. On the master enclosure, align the module that has Cable A (CALLOUT A) attached with - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 116
Single-Ended I/O Module Table 5-6 Installing Two-Enclosure Subsystem Cables (Continued) 10. On the expansion enclosure shroud, align the module that has Cable A (CALLOUT A) attached with the Port 1 backplane connector. Gently insert the module and fully seat it. Use a screwdriver to tighten the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 117
Single-Ended I/O Module Turning On the Subsystem Complete the procedures in Table 5-7 to turn ON the subsystem. Table 5-7 Turning On the UltraSCSI Subsystem 1. If there are no expansion enclosures, go to step 3. 1 2. Turn ON all the ac input boxes for each expansion enclosure by pressing I on - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 118
an UltraSCSI RAID subsystem with more than one enclosure. Refer to the array controller documentation to ensure the controller supports expanded configurations. Overtightening the I/O module spring-loaded mounting screws can damage the threads. Note The procedure in Table 5-8 connects a second - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 119
UltraSCSI subsystem. 2. Use a screwdriver to loosen the two spring-loaded mounting screws on the I/O module. 3. Grasp the I/O module by the cable support bracket and pull it straight outward until removed from the enclosure shroud. CXO5816A 4. Repeat steps 2 and 3 for all the I/O modules within - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 120
connector. Tighten both cable connector thumb screws to fully seat the connector. A CXO5854B 9. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 10. Using the expansion I/O module in step 8, align the Cable B (CALLOUT B) connector with - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 121
Single-Ended I/O Module Table 5-8 Installing Three-Enclosure Subsystem Cables (Continued) 11. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 12. On the first expansion enclosure shroud, align the module that has Cable B (CALLOUT B) - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 122
Single-Ended I/O Module Table 5-8 Installing Three-Enclosure Subsystem Cables (Continued) 15. On the second expansion enclosure shroud, align the module that has Cable B (CALLOUT B) attached with the Port 1 backplane connector. Gently insert the module and fully seat it. Use a screwdriver to - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 123
the subsystem using Table 5-5. 2. Use a screwdriver to loosen two spring-loaded mounting screws on the I/O module. 3. Grasp the I/O module by the cable support bracket and pull it straight outward until removed from the enclosure shroud. CXO5940A 4. Cut the wire tie securing the left cable. Loosen - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 124
connector. Tighten both cable connector thumb screws to fully seat the connector. CXO5940A 3. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 4. If attaching a cable to the right I/O module connector is necessary, repeat steps 2 and - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 125
to loosen the two spring-loaded mounting screws on the I/O module connected to the cable that is being removed. 3. Grasp the module by the cable support bracket and pull it directly to the rear and remove it from the enclosure shroud. 4. Repeat steps 2 and 3 for the I/O module attached to the other - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 126
into the module connector. Tighten both cable connector thumb screws to fully seat the connector. CXO5940A 3. Install a wire tie through the holes on the cable support bracket and around the cable. Tighten the wire tie. 4. Repeat steps 2 and 3 for the other end of the cable. This end of the cable - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 127
6 Power Distribution This chapter describes the UltraSCSI RAID enclosure power distribution to include the following: • Enclosure power system overview (see Figure 6-1) • Power distribution configurations (standard, redundant, and optimum) • Error condition reporting • Replacement procedures (power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 128
Power Distribution Note Proper operation of the controller cache modules requires ECBs. Refer to the array controller documentation for discussion on how to use the ECBs. Power System Overview In any RAID subsystem, the elimination of single points of failure is taken into consideration. Designing - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 129
Power Distribution Three configurations exist: • Standard (n+1) • Redundant (n+4) • Optimum (n+4) Standard (n+1) This configuration has one redundant power supply for a total of five power supplies. A single ac input box distributes ac power to all five power supplies using power bus A. This - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 130
Power Distribution AC Input Box The ac power distribution is provided through the ac input box (see Figure 6-2) to the shelf power supplies. The ac power switch on each ac input box controls the ac distribution to the associated power bus (A or B). These ac input boxes are completely - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 131
Power Distribution Shelf Power Supplies Each shelf power supply (see Figure 6-3) converts the incoming ac voltage into +5 V dc and +12 V dc and distributes these voltages throughout the RAID enclosure. The maximum capacity for the UltraSCSI RAID enclosure is eight power supplies, four of which - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 132
Power Distribution AC Power Buses AC power distribution to the UltraSCSI shelf power supplies is distributed over two power buses-bus A and bus B (see Figure 6-4). Each power bus has an ac power source, a separate ac input box, power supplies, and power cords. Figure 6-4 Enclosure AC Power Buses - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 133
Power Distribution Power Distribution Configurations This section describes the three power configurations for the UltraSCSI RAID enclosure. Standard (n+1) Power Configuration This power configuration provides minimum power supply redundancy. AC power distribution is provided over power bus A to - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 134
Power Distribution Any one of the following power related error conditions will cause this UltraSCSI RAID enclosure to cease operation: • Loss of the ac power source • Failure of two shelf power supplies • Failure of the ac input box Redundant (n+4) Power Supply Configurations This power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 135
Power Distribution To implement this configuration from an n+1 configuration, order the following additional components: • 3 - power supplies (DS-BA35X-HH) • 1 - ac input box (DS-BA35X-HE) This power configuration provides data protection through maximum redundancy of all enclosure power system - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 136
Power Distribution • Failure of the ac power source for bus B and one power supply on bus A • Failure of the ac power source on bus A and one power supply on bus B • Failure of the ac input box on bus B and one power supply on bus A • Failure of the ac input box on bus A and one power supply on bus - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 137
Power Distribution LED is ON The green power supply status LED (CALLOUT 2) is ON when the power supply is operating properly. If the power supply fails, both power supply LEDs (CALLOUTS 1 and 2) turn OFF. Table 6-1 identifies the possible fault displays and provides a description of each state. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 138
Power Distribution Replacing a Power Supply This section describes how to properly handle power supply SBBs and the procedures for replacing a power supply. Handling a Power Supply SBB Table 6-2 defines the proper methods for handling a power supply SBB to prevent damaging it. Table 6-2 SBB - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 139
Power Distribution Procedures for Replacing a Power Supply The basic procedure for removing and replacing shelf power supplies is the same as for replacing disk drives. There are two methods for replacing shelf power supplies-the hot swap method and the cold swap method. Use the power supply status - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 140
Power Distribution Table 6-3 Removing a Power Supply (Continued) 4. If there are no expansion enclosures, go to step 5. If there are expansion enclosures, press and hold the PVA standby power switch (CALLOUT 1) on an expansion enclosure until the master EMU initiates a power shut down on all - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 141
Power Distribution Table 6-3 Removing a Power Supply (Continued) 9. Press the two mounting tabs together to release the power supply from the shelf. Using both hands, pull the power supply out of the shelf. 10. Place the power supply into an electrostatic bag. 11. Lay the power supply on its side - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 142
Power Distribution Table 6-4 Installing a Power Supply (Continued) 3. Insert the power supply into the guide slots and push it in until the bezel mounting tabs engage the shelf, fully seating the power supply. CXO-4314A-MC 4. Connect the power cord - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 143
the procedure in Table 6-5 to remove an ac input box. Complete the procedure in Table 6-6 to install an ac input box. WARNING! Only qualified service personnel can replace an ac input box. To prevent the possibility of injury or death as a result of electrical shock: • Always disconnect the ac - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 144
Power Distribution Table 6-5 Removing an AC Input Box (Continued) 4. Disconnect the ac power cord (CALLOUT 4) from the ac input box (CALLOUT 1). 5. Loosen the two retaining screws (CALLOUT 2) and remove the ac input box (CALLOUT 1). 0 1 0 1 1 2 3 4 6. Place the ac input box into an electrostatic - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 145
Power Distribution Table 6-6 Installing an AC Input Box (Continued) 3. Align the ac input box (CALLOUT 1) with either slot A or slot B in the lower left or lower right corner of the RAID enclosure, respectively. 0 1 0 1 1 2 3 4 CXO5186B 4. Push in on the ac input box to fully seat it. 5. Tighten - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 146
- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 147
associated LED displays are also described. Figure 7-1 Typical Disk Drive SBB CXO-4562A-MC Caution The Compaq UltraSCSI RAID enclosure supports 3.5-inch disk drive SBBs. This enclosure does not support tape drives, solid state disks, optical disk drives, CD-ROMs, or 5.25-inch devices. For a list of - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 148
Storage Devices Identifying a Storage Device To determine the model number of a storage device (disk drive SBB), look at the regulatory label (see Figure 7-2) on the side of the SBB or at the disk drive SBB bezel label. Figure 7-2 Typical Drive SBB Regulatory Label CXO5916A A typical drive SBB bezel - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 149
Storage Devices Figure 7-3 Typical Drive SBB Bezel Label 1 DS-RZ1CB-VW 2 4.3 GB Figure CALLOUTS 1. Device model number 3 LUN # 4 ID # 5 CH # 9 40 F20 8 WW 6 7 CXO5917A 2. Device storage capacity 3. User-assigned SCSI LUN 4. User-assigned SCSI identification number (target ID) 5. User - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 150
Storage Devices Disk Drive SBB Status Reporting The array controller monitors the status of the disk drive SBBs. If a fault occurs, the fault and the disk drive SBB device address (SCSI target ID) are reported to the array controller or host for processing. The disk drive status LEDs define the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 151
Storage Devices LED is ON LED is FLASHING See Table 7-1 for definitions of the LED displays. Table 7-1 Disk Drive Status LED Displays LED Display Description and Possible Corrective Actions The disk drive SBB is operating properly. The disk drive SBB is operating normally. The unit is inactive - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 152
bus to "hang." The SBB connector is a simple, highly reliable mechanism that supports 200 SBB replacement cycles. A replacement cycle consists of removing and replacing an SBB are not eligible for return under warranty or standard service plans. Compaq markets a specific family of removable storage - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 153
. Caution The methods for replacing Compaq array controllers and cache modules are device dependent. Refer to the array controller documentation or release notes for detailed instructions. UltraSCSI RAID Enclosure 7-7 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 154
hot swap, other controllers do not. Refer to the array controller documentation to determine which array controller-supported swap method to use. If you are not positive that your SCSI controller supports hot swap, Compaq recommends using warm swap to protect data integrity. Use hot swap to remove - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 155
Storage Devices Replacing a Disk Drive SBB This section describes how to properly handle disk drive SBBs and the procedures for replacing a disk drive SBB. Table 7-2 Handling a Disk Drive SBB Table 7-2 defines the proper methods for handling a disk drive SBB to prevent damage. SBB Handling Rules - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 156
Storage Devices Procedures for Replacing a Disk Drive SBB Complete the procedure in Table 7-3 to remove a disk drive SBB. When initially installing disk drive SBBs in an enclosure or installing a single disk drive SBB, complete the procedure in Table 7-4. Table 7-3 Removing a Disk Drive SBB 1. To - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 157
Storage Devices Table 7-3 Removing a Disk Drive SBB (Continued) 6. If there are no expansion enclosures, go to step 7. If there are expansion enclosures, turn OFF all the ac input boxes for each expansion enclosure by pressing O on each ac power 1 switch (CALLOUT 1). 7. Turn OFF all the ac input - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 158
information for this disk drive. 2. If assembling an UltraSCSI enclosure, go to step 8. 3. For a hot or warm swap, insert the disk drive SBB into the guide slot and push it in until the mounting tabs engage the shelf, fully seating the disk drive SBB. 4. After installing the disk drive SBB during - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 159
Storage Devices Table 7-4 Installing a Disk Drive SBB (Continued) 6. If performing a cold swap, determine if there are expansion enclosures. If there are no expansion enclosures, go to step 7. If there are expansion enclosures, turn OFF all the ac input boxes for each expansion enclosure by - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 160
Storage Devices Table 7-4 Installing a Disk Drive SBB (Continued) 11. Starting at the left end, install all the disk drive SBB devices in shelf 4 (devices 19 through 24). 12. If performing a cold swap, determine if there are expansion enclosures. If there are no expansion enclosures, go to step - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 161
8 Enclosure Blowers Ensuring proper UltraSCSI RAID enclosure operation requires establishing and maintaining the proper operating environment. Meeting the temperature and humidity ranges specified in Appendix A involves using air conditioning to establish and maintain the proper external, that is, - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 162
7 A4 B8. Blower 8 CXO5494B Enclosure temperature sensors (see Chapter 3) detect overtemperature conditions or blower malfunctions and alert the user to the problem. Simultaneously, the EMU causes all operational blowers to operate at high-speed, increasing air flow through the enclosure to increase - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 163
blower connectors. Blower status and speed control signals are also on these connectors and are routed to the EMU and PVA. A blower guide pin ensures connector alignment when installing a blower. A combination of blower connector and mounting tabs provides positive mating of the blower with the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 164
Enclosure Blowers Caution The only StorageWorks dual-speed blower that is compatible with this UltraSCSI RAID enclosure is model DS-BA35X-MK. Do not use the BA35X-MD dual-speed blower as a replacement. Error Condition Reporting The EMU LEDs display both blower and overtemperature error conditions. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 165
Enclosure Blowers Caution Operating an UltraSCSI enclosure with a blower removed significantly changes the air flow pattern and reduces air flow through the components. If a blower is removed and not replaced within approximately 8 minutes, the array controllers will shut down and then the EMU will - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 166
8-2 Installing a Blower 1. Verify that the blower is a model DS-BA35X-MK. 2. Orient the replacement blower to align its connector (CALLOUT 2) and guide pin (CALLOUT 1) with the backplane blower connector. 1 2 3 4 CXO5753B 3. Push the blower straight in, until the upper and lower mounting tabs - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 167
Appendix A UltraSCSI Enclosure Specifications 10 9 8x 8 7 2x 6 2x This appendix defines the physical, electrical, and environmental specifications for a Compaq StorageWorks UltraSCSI enclosure with 24 disk drives and all its major electronic components. See Figure A-1 and its associated CALLOUT - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 168
UltraSCSI Enclosure Specifications Note The operating and servicing physical specifications as well as the electrical specifications for the UltraSCSI RAID enclosure are cabinet- and configuration-specific. Physical and Electrical Specifications The following specifications - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 169
UltraSCSI Enclosure Specifications Operating Environments Table A-1, Table A-2, and Table A-3 provide the environmental specifications for the controller shelf. Table A-1 Optimum Operating Environment Condition Specification Temperature 18-24°C (64-75°F) with an average rate of change of 3°C/h - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 170
UltraSCSI Enclosure Specifications Table A-3 Shipping Environment Condition Specification Temperature -40°C to +66°C (-40°F to +150°F) Relative humidity 10-80% noncondensing Altitude 4900 m (16,000 ft) A-4 UltraSCSI RAID Enclosure - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 171
UltraSCSI Enclosure Specifications SBB Thermal Stabilization For proper operation upon initial power application, maintain the Compaq SBB storage device temperature within the range of 18-29°C (65-85°F). See Table A-4 for condition statements. Caution Always thermally stabilize a disk drive SBB in - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 172
- HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 173
Appendix B Assembling an UltraSCSI RAID Subsystem Assembling an UltraSCSI RAID subsystem (see Figure B-1) requires sequentially installing the components in a DS-BA370 series rack-mountable enclosure. The UltraSCSI RAID enclosure arrives as either a departmental server cabinet (a pedestal with a - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 174
for all UltraSCSI RAID subsystems, whether they use one, two, or three DS-BA370 enclosures. To reduce the possibility of multiple interacting problems, the preferred assembly sequence is as follows: 1. Assemble and test the master enclosure. Note Prior to power application and testing, a minimum - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 175
Assembling an UltraSCSI RAID Subsystem 1. Mount an empty UltraSCSI RAID enclosure in the data center cabinet using cabinet documentation. Departmental server cabinets arrive prepared for component installation. 2. Install the EMU and the EMU communication cables as required. 3. Install the PVA. 4. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 176
procedures in Table 5-10 to install I/O modules in the enclosure. Caution Not all array controllers support more than one enclosure. Refer to the array controller documentation to verify that it supports more than one enclosure. In an expanded subsystem, refer to Table 5-3 for preliminary cabling - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 177
Assembling an UltraSCSI RAID Subsystem Installing Array Controllers and Cache Modules The master enclosure contains the array controllers and cache modules. ECBs cannot be installed within the enclosure. In a departmental server cabinet, install the ECBs in the top cover. In a data center cabinet ( - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 178
Assembling an UltraSCSI RAID Subsystem Table B-1 describes the mechanical procedures for installing array controllers and cache modules. Following installation, configure the subsystem using procedures contained in the following publications: • Array controller documentation • Operating system- - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 179
Assembling an UltraSCSI RAID Subsystem Table B-1 Installing Array Controllers and Cache Modules (Continued) 2. Insert the array controller into the Controller A slot and push it in until the extractor latches engage the enclosure. CXO5602A 3. Simultaneously push in both extractor latches to firmly - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 180
Assembling an UltraSCSI RAID Subsystem Table B-1 Installing Array Controllers and Cache Modules (Continued) 7. If a second array controller and cache module set is required, repeat steps 2 through 7 using Controller B and Cache B slots (CALLOUTS 3 and 4) shown below. 1 2 4A 19 20 21 22 23 24 4B - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 181
Assembling an UltraSCSI RAID Subsystem Installing the Power System The ac input boxes and shelf power supplies comprise the enclosure power system (see Figure B-4). Figure B-4 Enclosure Power System CXO5800A Caution To protect this sensitive electronic device from ESD, use the following precautions: - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 182
following publications: • Array controller documentation • DIGITAL StorageWorks UltraSCSI RAID Cabinet Subsystem (DS-SW600 Series) Installation and User's Guide • Pedestal documentation Configuring the Subsystem Refer to Chapter 2 for configuring the subsystem. Apply configuration rules that pertain - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 183
Appendix C Installing EMU Microcode The microcode resident in the EMU memory controls all the UltraSCSI RAID enclosure (DS-BA370 series) EMU operations. Proper operation of the subsystem requires that all EMUs have the same revision level microcode. Upon system startup, the master EMU polls the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 184
Installing EMU Microcode Prerequisites The following items are required to upgrade the EMU microcode using the EMU UART connector: • EMU microcode file (for example, FLSH_011.HEX) • PC • Communications program, such as PROCOMM PLUS • Compaq adapter cable, part number 17-04697-01, with the following - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 185
Installing EMU Microcode Table C-1 Preliminary Procedures (Continued) 5. Use the PROCOMM PLUS Setup Utility to establish the following parameters for modem and protocol options: Modem Options General Options Auto baud detect OFF Send init if CD high NO Protocol Options General Options Abort - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 186
Installing EMU Microcode Preparing the EMU Complete the procedure in Table C-2 to prepare the EMU for loading the microcode. Table C-2 Preparing the EMU 1. On the master enclosure, press and hold-in the alarm control switch while removing the EMU from the enclosure. The PVA audible alarm sounds, - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 187
Installing EMU Microcode Table C-4 Typical PC Monitor Display Display Text Comments SW 370 EMU (ROM) Version V01.02 Copyright © 1997, Digital Equipment Corporation EMU successfully completed boot. +++ Attempting to load FLASH image from UART +++ Download Parameters Raw ASCII, 38400 Baud, 8 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 188
Installing EMU Microcode Restarting the Controller Complete the procedure in Table C-5 to restart the controller after the microcode upgrade is loaded. Table C-5 Restarting the Controller 1. Remove the 8-pin RJ45 connector from the EMU UART connector. 2. On each controller, press and hold-in the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 189
Glossary This glossary defines terms pertaining to the DS-BA370 series UltraSCSI RAID enclosure. It is not a comprehensive glossary for all StorageWorks products. ac distribution The method of distributing ac power within a StorageWorks shelf, enclosure, or cabinet. ac input box A device that - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 190
Glossary ambient air temperature The temperature of the air surrounding the cabinet, enclosure, shelf, or SBB that dissipates the heat generated by the device. See also intake air temperature. array controller See controller. backplane The electronic printed circuit board mounted in the rear of the - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 191
Glossary Caution The device transceiver type (single-ended or differential) must match the bus segment type. Devices that do not meet this condition cannot operate. The allowed length of a bus segment depends on the electrical loading, transmission media type, and data transfer rate. In many cases, - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 192
SCSI bus to devices. Controllers typically differ by the type of interface to the host and provide functions beyond those the devices support. (2) A standalone device that connects a host adapter to the storage SCSI bus. This device provides RAID functionality, typically has multiple SCSI bus ports - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 193
SCSI bus A bus in which the voltage potential difference between two wires determines the signal level. disk drive A storage device supporting random access to fixed size blocks of data. dual redundant configuration An array controller configuration consisting of controller A and controller - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 194
Glossary ECB External cache battery. A device that provides backup power to a cache module for sustaining memory retention. electromagnetic interference See EMI. electrostatic discharge See ESD. EMC Electromagnetic compatibility. EMI Electromagnetic interference. The impairment of a signal by an - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 195
Glossary expansion enclosure An UltraSCSI RAID enclosure connected to the master enclosure with UltraSCSI bus cables. Each subsystem can have a maximum of two expansion enclosures. Set the expansion PVA SCSI bus address switch to either: 2 - Establishing SCSI bus device addresses 8, 9, 10, and 11 3 - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 196
Glossary Federal Communications Commission See FCC. filler panel A panel used to cover open unused areas in cabinets or shelves for either EMI suppression, air flow control, or cosmetic purposes. host The primary or controlling computer (in a multiple computer network) to which storage is attached. - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 197
Glossary HSOF Hierarchical Storage Operating Firmware. HS-family controller software contained on a removable ROM card (PCMCIA). ID Identifier-as used in SCSI bus ID, target ID or device ID. initiator A SCSI device (usually a host system) that requests another SCSI device (a target) to complete an - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 198
Glossary master enclosure The UltraSCSI RAID enclosure that includes the HSZ series controllers and cache modules. There is only one master enclosure in each UltraSCSI RAID subsystem. The SCSI bus address switch setting is always 0. Using address 0 automatically assigns SCSI bus device addresses 0, - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 199
Glossary physical bus Two SCSI terminators separated by cables, connectors, and backplane circuitry. port (1) A logical route for data in and out of an array controller. A port can contain one or more channels, all of which contain the same type data. (2) The hardware and software that connects a - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 200
Glossary redundant power supply configuration A capability of StorageWorks cabinet and shelves to ensure that there is no single point of power failure. (1) For a cabinet, two ac power sources and two distribution units or ac input boxes distribute primary and redundant ac power to shelf power - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 201
Glossary SCSI device A host computer adapter, a peripheral array controller or an intelligent peripheral that can be attached to the SCSI bus. SCSI domain A SCSI domain is a logical bus consisting of at least one bus segment, at least one initiator, and at least one target. Domains with multiple bus - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 202
Glossary See also spin-up. spin-up A process that begins when power is applied to a storage device, and ends when the device is determined to be operational and ready for data transfer operations. See also spin-down. standard power configuration A power configuration in which there is only one ac - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 203
complete compliance with country-specific standards (for example, FCC, CE-Mark, CSA, TÜV, VDE, and so forth) and with all Compaq standards. (2) A device supported by an array controller or host operating system. target A SCSI device that performs an operation requested by an initiator. target ID See - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 204
Glossary See also STERMPOWER. topology The physical arrangement and relationship of interconnected nodes and SCSI buses in a network. A legal topology must satisfy all the requirements of the associated SCSI bus (Fast 10, UltraSCSI, and so forth). trilink connector A 3-way SCSI connector. UltraSCSI - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 205
Glossary UltraSCSI RAID subsystem One or more UltraSCSI RAID enclosures mounted in either a pedestal or a cabinet. Each subsystem requires a master enclosure. Adding one or two expansion enclosures to any single-enclosure subsystem creates an expanded subsystem. VHDCI Very high density cable - HP StorageWorks EMA12000 | Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA37 - Page 206
Compaq Computer Corporation
Houston, Texas
Compaq StorageWorks
UltraSCSI RAID Enclosure
(DS–BA370 Series)
User's Guide
Part Number:
EK–BA370–UG. C02/387403–001
September 1998
The DS–BA370 series UltraSCSI RAID rack-mountable enclosure is the
basic building block of UltraSCSI RAID subsystems. This guide and its
related publications comprise the basic documentation set for these
subsystems.