HP XP24000 HP StorageWorks XP24000 Continuous Access Software User and Referen
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- HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 1
HP StorageWorks XP24000 Continuous Access Software User and Reference Guide Part number: T5278-96002 First edition: June 2007 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 2
Hewlett-Packard Development Company, L.P. Confidential computer software. Valid license from HP required for possession, use or copying. Consistent with FAR 12.211 and 12.212, Commercial Computer Software, Computer Software Documentation, and Technical Data for Commercial Items are licensed to the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 3
Access Split Types (PSUS Continuous Access Suspend Types Continuous Access Asynchronous Suspension Conditions Interoperability with Other Products and Functions Business Copy Data Retention Utility LUN Expansion Virtual LVI/LUN Cache Residency Manager LUN Manager HP StorageWorks - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 4
Logical Unit (LU) Types Consistency Groups Accessing Continuous Access P-VOLs and S-VOLs Cache and Nonvolatile Storage (NVS Host Failover Software Duplicate Volumes Host System Crash Installing the Hardware Remote Copy Connections Enabling Continuous Access Options Configuring the MCUs and - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 5
General Troubleshooting 135 Error Codes and Messages 141 SIM Report 142 Calling HP Technical Support 142 A Continuous Access Load Balancing and Sidefile Management and Control 143 B Acronyms and Abbreviations 145 Index 147 XP24000 Continuous Access Software User and Reference Guide - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 6
4 ..Shared Continuous Access P-VOL/Business Copy P-VOL 5 ..Shared Continuous Access S-VOL/Business Copy P-VOL 6 ..Shared Continuous Access/Business Copy P-VOL with Shared Continuous Access S-VOL/Business Copy P-VOL 7 ..Shared Business Copy S-VOL/Continuous Access P-VOL 8 ..Remote Copy Connection - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 7
Relationship Between Log File and Data File in PAIR Status 54 ..Continuous Access Error Message for a Failed Delete RCU Operation 93 93 94 95 96 100 102 103 104 106 106 111 113 115 118 121 129 142 XP24000 Continuous Access Software User and Reference Guide 7 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 8
PAIR or COPY) . . . 39 16 ..Continuous Access Functions 17 ..Initial Copy Pace for Calculating The Initial Copy Response Time 56 77 18 ..Example setting 77 19 ..Logical Path Status 82 20 ..Remote Copy I/O Statistics 91 21 ..Optimizing Continuous Access Operations and Storage System - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 9
and Continuous Access software Related Documentation • HP StorageWorks XP24000 Disk Array Owner's Guide • HP StorageWorks XP24000 Remote Web Console User's Guide • HP StorageWorks XP RAID Manager User's Guide • Hitachi TrueCopy for Mainframe User's Guide • HP StorageWorks XP24000 LUN Manager User - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 10
. Window contents also vary depending on installed program products and the storage system being managed. HP Technical Support For worldwide technical support information, see the HP support website: http://www.hp.com/support Before contacting HP, collect the following information: • Product model - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 11
Documentation Feedback HP welcomes your feedback. To make comments and suggestions about product documentation, send a message to [email protected]. All submissions become the property of HP. XP24000 Continuous Access Software User and Reference Guide 11 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 12
12 About this Guide - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 13
the offline backup volumes at the secondary (remote) site via the dedicated Fibre Channel remote copy connections. The Continuous Access software is included in the HP StorageWorks XP Remote Web Console Java application, and all Continuous Access functions and operations can be performed from within - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 14
secondary (remote) storage systems (MCUs and RCUs). This document covers Continuous Access operations in which the main storage system is an HP XP24000 Disk Array and the remote storage system is an HP XP24000 Disk Array (or an HP XP12000 Disk array). The MCUs contain the Continuous Access primary - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 15
on all LDEVs except for the storage system command device. For further information on the storage system command device, see the HP StorageWorks XP RAID Manager User's Guide. Note: This document provides instructions for performing Continuous Access operations with HP XP24000 Disk Arrays as the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 16
available on the storage system (for example, OPEN-3, OPEN-8, OPEN-9, OPEN-E, OPEN-L, and OPEN-V). Continuous Access also supports the HP StorageWorks XP LUN Expansion (LUSE), HP StorageWorks XP Virtual LVI/LUN, and HP StorageWorks XP Cache Residency Manager features, ensuring that all user data can - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 17
the SVP of the storage system via defined TCP/IP connections. For further information on Remote Web Console operations, see the HP StorageWorks XP24000 Remote Web Console User's Guide or contact your HP service representative. If you plan to perform Continuous Access operations using RAID Manager - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 18
be transferred to the remote site via the host failover software for effective disaster detection and recovery. Continuous Access Remote Copy Operations Figure 2 on page 18 illustrates the two types of Continuous Access remote copy operations: initial copy and update copy. To reduce the overhead - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 19
to specify how many tracks are copied simultaneously by the Continuous Access initial copy operation when creating/resynchronizing a Continuous Access pair. This option can only be specified using the remote console software (not RAID Manager). • The initial copy priority option allows you to specify - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 20
for a Continuous Access P-VOL with PAIR status, the user-selected update copy mode (synchronous or asynchronous) determines the sequence of events: • Synchronous Mode: The MCU performs the write operation on the P-VOL, starts the update copy operation for the S-VOL, and then reports the final ending - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 21
Continuous Access Pairs" on page 105). If an HP XP24000 Disk Array is connected with an HP XP12000 Disk Array, the unit of Difference Management is applied as it is when you specify the unit. If an HP XP24000 Disk Array is connected with XP24000 Continuous Access Software User and Reference Guide - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 22
is the lesser number by comparing both numbers. If an HP XP24000 Disk Array is connected with an HP XP12000 Disk Array, you can use both the Remote Web Console software and the RAID Manager software to specify the unit of Difference Management: Auto, Track, and Cylinder. You can also see the setting - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 23
existing cached track, and the cache space for the sidefile is released. • If the corresponding track is not in cache (track-miss), the RCU changes the cache designation of the sidefile to formal data. The data is not physically moved. XP24000 Continuous Access Software User and Reference Guide 23 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 24
to prevent an overload of the storage system's cache resources. The storage systems use the following parameters for Continuous Access Asynchronous cache inflow control, and the Continuous Access Asynchronous Option dialog box (see "Setting the Asynchronous Copy Options" on page 84) allows you - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 25
the Offloading Timer. For information on Concurrent Copy (CC) cache sidefile operations, see the Hitachi TrueCopy for Mainframe User's Guide. Storage systems performing Continuous Access Asynchronous in combination with CC must have sufficient cache installed to handle the increased sidefile activity - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 26
recovery. The Group error level should be selected for all Continuous Access Asynchronous volumes which are essential to disaster recovery. Suspended Continuous Access S-VOLs which have the LU error level should not be used for disaster recovery. 26 About HP StorageWorks XP Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 27
status information on the Remote Web Console computer (Continuous Access Detailed Information dialog box) or on the UNIX/PC server host (RAID Manager Pairdisplay command). A volume which is not assigned to a Continuous Access pair has the status SMPL. When a Continuous Access pair is started, the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 28
of the Continuous Access LUSE volume is PAIR or COPY, and the status of one or more LDEV pairs is PSUE or SMPL. Read/write S-VOL Access Read only; Read and write, if the write enable split option is selected. Read only Read only 28 About HP StorageWorks XP Continuous Access Software Operations - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 29
30 lists and describes the Continuous Access split types. A Continuous Access pair can be split by the user at any time after the initial copy operation is complete. The user must split a Continuous Access pair in order to perform media maintenance on the P-VOL or to access the S-VOL (S-VOL write - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 30
consistency group is ensured. This S-VOL can be used for disaster recovery at the secondary (remote) system (after releasing the Continuous Access pair from the RCU). This status is indicated when: • This pair was split by the user using the Suspend Range-Group pairsplit option. • All pairs in this - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 31
the differential data per Continuous Access Asynchronous P-VOL to the shared memory. The RCU stores the differential data per Continuous Access Asynchronous S-VOL to the shared memory. When a Continuous Access Asynchronous pair is XP24000 Continuous Access Software User and Reference Guide 31 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 32
S-VOL of Continuous Access and Continuous Access Async. Table 10 on page 33 explains whether non-Continuous Access and non-Continuous Access Asynchronous volumes are also usable as Continuous Access and Continuous Access Asynchronous volumes. 32 About HP StorageWorks XP Continuous Access Software - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 33
the Volumes be Used as Continuous Access S-VOL? Can the Volumes be Used as Continuous Access Asynchronous P-VOL? Can the Volumes be Used as Continuous Access Asynchronous S-VOL? LUN Expansion (LUSE) LUSE Volume Yes Yes Yes Yes HP StorageWorks XP Business Copy Software P-VOL in PSUS status - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 34
No No HP StorageWorks XP Continuous Access Journal Software Primary data volume in COPY status No No No Primary data volume in PAIR status Yes No However, the volume can be used as an S-VOL only when you restore No a Continuous Access pair or perform a RAID Manager horctakeover - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 35
to Consistency group No. 00, a TrueCopy Asynchronous for Mainframe pair and Continuous Access Journal pair cannot be allocated to Consistency group No. 00. Continuous Access and TrueCopy for Mainframe share the same cache sidefile area. XP24000 Continuous Access Software User and Reference Guide 35 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 36
based on Continuous Access and Business Copy pair status. For further information on Business Copy, see the HP StorageWorks XP24000 Business Copy Software User's Guide. Note: Business Copy is recommended for intra-storage system copy operations. If Business Copy is not installed, Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 37
a Business Copy S-VOL which is also used as a Continuous Access P-VOL. Caution: This configuration requires that the Business Copy pair be established in duplex mode (PAIR) and then split (PSUS) before the Continuous Access pair is created. XP24000 Continuous Access Software User and Reference Guide - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 38
Figure 7 Shared Business Copy S-VOL/Continuous Access P-VOL Caution: When you share a Continuous Access S-VOL with a Business Copy P-VOL as shown in Figure 5 on page 37 or Figure 6 on page 37, the write operation to the Continuous Access P-VOL takes time. Specifically, when the Business Copy pair is - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 39
return the volume to SMPL status. For further information on LUN Expansion (LUSE), see the HP StorageWorks XP24000 LUN Expansion User's Guide. Note: If you allocate a LUSE volume that consists of LDEVs set across more than one CU to the Continuous Access pair, you must select CU Free for an RCU (see - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 40
so that inquiries and commands issued by the Remote Web Console computer can be processed more quickly. For further information on Performance Monitor, see the HP StorageWorks XP24000 Performance Monitor User's Guide. To perform Continuous Access (or other) operations while Performance Monitor is - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 41
and hardware performance of the storage systems (HP XP24000 Disk Array, HP XP12000 Disk Array). Graph-Track data collection does not affect storage system operations in any way. For further information on Graph-Track, see the Graph-Track User's Guide. XP24000 Continuous Access Software User and - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 42
42 About HP StorageWorks XP Continuous Access Software Operations - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 43
are: • MCU: storage system with Continuous Access installed by using a license code. Note: For information on performing remote copy using a non-storage system model as an MCU, see the HP StorageWorks XP24000 Continuous Access Software User and Reference Guide for the non-storage system models. Note - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 44
pairs. Note: Please contact your HP service representative for the latest information on supported devices for your platform. Continuous Access supports the LUN Expansion (LUSE) feature of the storage system, which allows you to configure expanded LUs using two or more contiguous LDEVs (up to 36). If - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 45
pairs that belong to the same CLPR can be allocated to one Continuous Access consistency group. For further information on CLPRs, see the HP StorageWorks XP24000 Disk/Cache Partition User's Guide. Accessing Continuous Access P-VOLs and S-VOLs To ensure maximum data integrity during normal - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 46
so that the Continuous Access hardware can be installed and configured properly. 2. HP Service Representative: Make sure that the MCU(s) and RCU(s) are configured for Remote Web Console operations (for example, SVP connected to LAN). See the HP StorageWorks XP24000 Remote Web Console User's Guide for - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 47
for ordinary switch connections, and no special settings are required for the storage systems. A Fibre Channel interface connection provides three different configurations (see HP StorageWorks XP24000 LUN Manager User's Guide): • Direct connection (see Figure 9 on page 48): Two devices are connected - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 48
port) Switch 1. Some switch vendors require an F port (for example, McData ED5000). 2. To set ports, use LUN Manager to set the port topology to: NL port: Fab on, FC-AL N port: Fab on, Point-to-Point Figure 10 Interface Switch Connection (NL_Port or N_Port) 48 Preparing for Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 49
its own separate set of license key codes. For instructions on using the Remote Web Console software and enabling the Continuous Access option(s), see the HP StorageWorks XP24000 Remote Web Console User's Guide. Note: When you use Remote Web Console on UNIX workstations or in other non-Windows - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 50
or 01). Controller ID = For an HP XP24000 Disk Array, the controller ID must be 05 (04 for an HP XP12000 Disk Array RCU). Logical Adr. (RCU CU) = RCU CU number (00-FE for an HP XP24000 Disk Array, 00-3F for an HP XP12000 Disk Array). SSID = maximum of four SSIDs per CU with 64 LDEVs per SSID. Note - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 51
Figure 12 Configuring the RCU Target and Initiator Ports XP24000 Continuous Access Software User and Reference Guide 51 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 52
Figure 13 Adding the RCUs 52 Preparing for Continuous Access Operations - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 53
Figure 14 Configuring the RCU Options Figure 15 Setting the Async Options XP24000 Continuous Access Software User and Reference Guide 53 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 54
Figure 16 Adding the Consistency Groups 54 Preparing for Continuous Access Operations - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 55
Continuous Access functions and operations. To open the Continuous Access windows: 1. Using the Remote Web Console software, connect to and log on to the desired storage system with Administrator access or Continuous Access write access. XP24000 Continuous Access Software User and Reference Guide - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 56
and instructions on using the Remote Web Console Java application, see the HP StorageWorks XP24000 Remote Web Console User's Guide. Note: The storage partition administrator cannot perform the Continuous Access operations. Figure 17 Continuous Access Main Window The Continuous Access windows - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 57
the Remote Copy Monitoring function. - System Option CU Option Allows you to view and export the operation history of the Continuous Access pairs. Allows you to change the storage system options. Allows you to change the CU options. - : No command. XP24000 Continuous Access Software User and - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 58
Continuous Access RCU and port configuration operations (see "RCU Operations" on page 69). To update the information on the RCU Operation window: • Click another tab, and then click the RCU Operation tab. • Click File, and then Refresh on the menu bar of the Remote Web Console (default) or Port - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 59
or RCU. MCU is displayed when the storage system that you are accessing is used as the RCU of the Free, the controller ID, model name, RCU serial number, LDKC number, and path group ID are displayed ID and path information includes: XP24000 Continuous Access Software User and Reference Guide 59 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 60
channel type (fibre) between the MCU and RCU (blank when the target CU is the MCU). • Status: Status of the path. • MCU Port: Port number on the MCU side. • RCU Port: Port number on the RCU side. Figure 19 MCU&RCU Display on the RCU Operation Window showing CU List 60 Using the Continuous Access GUI - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 61
information includes: • Port: Cluster and port number (CL1-A-CLG-R). • Attribute: Port type: initiator, target, RCU target, External, Initiator/External. • PCB Mode: Speed mode of the (Fibre Channel) port: standard, high speed, or MIX. XP24000 Continuous Access Software User and Reference Guide 61 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 62
then click the Asynchronous Operation tab. • Click File, and then Refresh on the menu bar of the Remote Web Console main window. • Click the Apply button. Note: The information about a consistency group that is registered from TrueCopy for Mainframe is not shown. 62 Using the Continuous Access GUI - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 63
) or path group ID of the paired storage system. If the consistency group is not in use, this column is blank. • Other S/N: Exist: indicates that there is more than one RCU for the group. If there is only one RCU, this column is blank. XP24000 Continuous Access Software User and Reference Guide 63 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 64
remote copy I/O statistics for all LDEVs to be monitored on the connected storage system, displays the status of remote copy usage monitoring, and allows you to perform the Continuous Access usage monitor operations. Please see "Usage Monitor Operations" on page 89 for information and instructions - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 65
instructions on performing Continuous Access history operations. To display the latest information for the History window, click File, and then Refresh on the menu bar of the Remote Web Console settings for accessing local files, see the HP StorageWorks XP24000 Remote Web Console User's Guide. Figure - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 66
on the History window. For further information on the settings for accessing local files, see the HP StorageWorks XP24000 Remote Web Console User's Guide. Note: The dates and times displayed on the History window are the storage system SVP date/time, which may or may not correspond to the local - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 67
Option will be displayed by each LDKC. • List: Displays nothing by default. When you select Subsystem Option or CU Option, the option settings to the storage system. • The Reset button: Resets the settings in the System Option window. XP24000 Continuous Access Software User and Reference Guide 67 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 68
68 Using the Continuous Access GUI - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 69
which control the S-VOLs of the Continuous Access pairs. The RCUs are connected to the MCUs via the remote copy connections and receive and process commands from the MCUs. For Continuous Access operations, the Remote Web Console computer should be installed on a separate LAN at the remote site to - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 70
port attribute within these ports can be used for Continuous Access. This attribute cannot be changed using the Continuous Access software. For details on the port to which an initiator/external mix mode is set, see the HP StorageWorks XP24000 External Storage Software User's Guide. Note: The port - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 71
MCU), the Add RCU command does not take effect and you cannot click the command. Note: When you add an RCU to a CU on the storage system, you cannot use CU Free. You must specify a CU when you add an RCU. XP24000 Continuous Access Software User and Reference Guide 71 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 72
the LDKC number which the RCU belongs to. Specify 00 or 01. Note: You can specify only 00 for the current microcode version. 72 Performing Continuous Access Configuration Operations - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 73
controller ID (5 for an HP XP24000 Disk Array or 4 for an HP XP12000 Disk Array), CU number, and SSID(s) or Path Gr. ID for the desired RCU CU. Enter the value in hexadecimal within the range of 1 to FF for Path Gr. ID or use the default value. Up to 64 Path Gr. IDs can be registered per storage - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 74
and specify the correct mode for each port. For details on the relationship between ports and PCB modes and instructions for setting the PCB mode, see the HP StorageWorks XP24000 LUN Manager User's Guide. Figure 27 on page 75 shows a sample Continuous Access Fibre Channel interface configuration with - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 75
during the add RCU process, and can also be opened by right-clicking on the RCUs and clicking the RCU OperationÆChange RCU Option command. XP24000 Continuous Access Software User and Reference Guide 75 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 76
. The default setting is 15 seconds. This setting is available for both Fibre Channel and serial interfaces. For further information on the MIH, see the Hitachi TrueCopy for z/OS User's Guide. The Round Trip Time setting is used for Initial Copy operations. This setting gives a priority to a remote - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 77
16. Table 17 Initial Copy Pace for Calculating The Initial Copy Response Time Operation RAID Manager Remote Web Console Perform Initial Copy and Update Copy at a Time Perform Initial Copy Only Initial Copy -click, and click Delete. XP24000 Continuous Access Software User and Reference Guide 77 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 78
that the remote copy connection is properly installed, the appropriate MCU ports are configured as initiator ports, and the appropriate MCU CU is selected. You can add up to four RCUs to each MCU CU and establish up to eight paths to each RCU. When you add a path to an RCU, Continuous Access will - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 79
Adding and Deleting SSIDs for an RCU Before adding an SSID, make sure that the remote copy connection is properly installed. You can add three SSIDs to each RCU. Before deleting an SSID, make sure , and then click the Add SSID command. XP24000 Continuous Access Software User and Reference Guide 79 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 80
already been released. If all affected pairs have not been released, the MCU will reject the delete SSID operation to prevent an accidental release of Continuous Access pairs. The Delete SSID command allows you to delete an SSID from an existing RCU. To delete an SSID from an existing RCU: 1. Click - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 81
Free) • Path List: • No.: Path number (path list item number). • Path Status: Path status. Table 19 on page 82 contains the path status descriptions. • MCU Port: Port number of the MCU. XP24000 Continuous Access Software User and Reference Guide 81 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 82
Status Status Description Condition Normal This path has been successfully established and can be used for Continuous Access remote copy activities. Initialization Failed The link initialization procedure with the RCU has failed because either the physical path connection between the MCU and - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 83
: Allows you to set the parameters per CLPR for asynchronous copy operations (section "Setting the Asynchronous Copy Options" on page 84). For further information on CLPRs, see the HP StorageWorks XP24000 Disk/Cache Partition User's Guide. CT Group Operation: Allows you to perform the following - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 84
modify the Continuous Access Asynchronous copy option parameters for the connected storage system. To open the Async Option dialog box, right-click the CT groups, and click the Async Option command. The async options apply to the entire physical control unit, including all Continuous Access P-VOLs - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 85
is the maximum amount of cache for starting to strengthen control over the inflow for the asynchronous copy. When the amount of cache that is used for async ) for the remote copy connections. Currently, you cannot change the path type. XP24000 Continuous Access Software User and Reference Guide 85 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 86
(unused) consistency group(s) that you want to add. The HP XP24000 Disk Array supports up to 128 consistency groups (00-7F) per LDKC, and allows you to use up to 128 consistency groups per entire storage system. The HP XP12000 Disk Array supports up to 128 consistency groups (00-7F). 4. Right-click - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 87
operation(s), select the operation(s) from the preview list, right-click, and click Modify. To remove one or more operations, select the operation(s) from the preview XP24000 Continuous Access Software User and Reference Guide 87 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 88
group(s) (Pairresync). See "Resynchronizing Continuous Access Pairs" on page 117 for instructions on resynchronizing pairs. Viewing Consistency LUN Manager. LUN columns shows the CU:LDEV in parentheses. For LUs with more than one path, only the first path is listed. 88 Performing Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 89
Note: If # is added to the end of an LDEV number (for example, 00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. MCU-RCU Path: Type of channel interface between the storage systems (fibre). Offloading Timer - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 90
the end of an LDEV number (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. To or • When you exit the Remote Web Console software. 90 Performing Continuous Access Configuration Operations - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 91
update copy remote I/Os. Total number of recordsets Number of asynchronous recordsets. Average transfer rate (kB/s) Average transfer rate (kB/sec) for Continuous Access/TrueCopy Asynchronous for Mainframe update copy remote I/Os. XP24000 Continuous Access Software User and Reference Guide 91 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 92
. For information and instructions on using the Export Tool, see the HP StorageWorks XP24000 Performance Monitor User's Guide. History Operations To display the latest information on the History window, click File, and then Refresh on the menu bar of the Remote Web Console main window. Exporting - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 93
and LDEV number of the paired volume. (6) The time taken for the operation (from the start of the operation to the end). Settings List for the Storage System • Activities: Number of volumes in concurrent initial copy operations (1 to 512 XP24000 Continuous Access Software User and Reference Guide 93 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 94
Activities setting specifies the number of concurrent initial copy operations. You can set a number from 1 to 512. The default setting is 64 volumes. Continuous Access initial copy activities can impact the performance of the main storage system, depending on the amount of I/O activity and the number - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 95
CU option in Continuous Access, you need to set the Maximum Initial Copy Activities (CU) to Enable in the System Option dialog box in advance (see "Changing the Option Settings of Storage System" on page the cause of the error message. XP24000 Continuous Access Software User and Reference Guide 95 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 96
the remote copy operations will impact storage system performance as follows: • Synchronous copy mode has an additional effect on storage system performance: increased service and disconnect time for write I/Os to Continuous Access P-VOLs due to the delay between the channel-end and device-end. The - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 97
. For best results, the cache and NVS capacity of the primary and secondary storage systems should be the same (the RCU sidefile requirements for Continuous Access Asynchronous are twice that of the MCU) to enable the remote site to function adequately during disaster recovery. RCU capacity The - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 98
have been deleted before continuing. 4. Remove the remote copy connections (physical paths). If you are not familiar with the operation for the remote copy hardware components (for example, switches), call HP technical support for assistance. 5. Reconfigure the storage system ports as needed (for - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 99
be LAN-attached to the Remote Web Console computer. You should also attach all RCUs to a Remote Web Console computer via a separate LAN at the remote site. If you will be using RAID Manager commands instead of the Continuous Access software, contact your HP service representative for information on - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 100
on the menu bar of the Remote Web Console main window. The pair information is also updated when you click the Apply button. Figure 42 Pair Operation Window The Pair Operation window presents: • Tree: Displays the connected storage system, LDKC, CU grouping, CUs, ports, and host groups. Select the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 101
sorted by port number in ascending order. To change the sort order (ascending or descending), select the column heading. Note: The number of columns displayed without horizontal scrolling can be changed by adjusting the font size. XP24000 Continuous Access Software User and Reference Guide 101 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 102
# is added to the end of an LDEV number (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. • Status: (see "Pair Status" on page 27 for further information on Continuous Access pair status - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 103
the volumes forming the pairs belong. For further information on CLPRs, see the HP StorageWorks XP24000 Disk/Cache Partition User's Guide. Note: The S/N, SSID, and Fence columns can be blank while a Continuous Access pair is in transition to the SMPL status. To display the latest information in - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 104
primary site (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. Note: The host group name of an LU on the primary site is indicated up to 8 characters. 104 Performing Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 105
the Pair Operation tab, select a CU, port, or host group from the tree, select the desired MCU CU from the list, right-click, and click the Paircreate command. And then select the desired copy mode (sync or async) for the new pair(s). XP24000 Continuous Access Software User and Reference Guide 105 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 106
the port number, GID, LUN, CLPR number, and CLPR name of the selected LU(s). If you selected more than one P-VOL, the P-VOL with the lowest LUN is displayed. Note: If # is added to the end of the device ID (for example, 00:00:3C#), the LDEV is an external 106 Performing Continuous Access Pair - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 107
the HP StorageWorks XP24000 Disk/Cache Partition User's Guide. • Error Level: Error level for the new pair(s): Group, or LU (default = Group). See "Pair Options" on page 110 for further information on the error level option. To create one or more new Continuous Access pairs: XP24000 Continuous - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 108
log on with Administrator or Continuous Access write access. c. Make sure that the RCU remote copy ports are configured (RCU target port). See "Configuring the Host Interface Ports" on page 70 for instructions on configuring the ports. 2. At the main site: a. Connect to the storage system which will be - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 109
"Difference Management" on page 20 for further information on this option. Example: If the maximum initial copy activity setting is four, and you create six pairs at the same time (for LUNs 000 through 005), the initial copy priority is set as follows: XP24000 Continuous Access Software User and - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 110
. The time out error may be caused by the CU configuration or a remote copy path error. Review the error, release the pair with the error, and then retry the Paircreate operation. Pair Options When you create new Continuous Access pairs, you select the pair options on the Paircreate dialog box (see - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 111
) • Volume: Port - GID (host group number) - LUN of the selected volume. Note: If # is added to the end of an LDEV number (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. • P-VOL - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 112
: If an error occurs, you can display the error message by right-clicking on the operation and clicking the Error Detail command. Viewing Continuous Access Pair Status The Detailed Information dialog box (see Figure 49 on page 113) displays the detailed pair status information for the selected pair - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 113
LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. CLPR: The CLPR number and the CLPR name of the volume on the primary site are displayed. Group Name: Displays the host group name if the port on the primary site - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 114
paircreate operation. Difference Management: Cylinder or track box. By default, the check Continuous Access pairs, see "Continuous Access Split Types (PSUS)" on page 29. Note: You can split a Continuous Access pair only after the initial copy operation is complete. 114 Performing Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 115
: • Volume: Port - GID - LUN of the selected volume. Note: If # is added to the end of an LDEV number (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. • S-VOL Write (default = disabled - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 116
cache rate, from the frequency of host I/O. The suspend pair operations should be performed under light I/O load conditions. • Pending Update: Drain or Purge (default copy pending timeout setting, the MCU will forcibly suspend all affected Continuous Access or more individual LDEV pairs within the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 117
and select the pairresync options. To open the Pairresync dialog box, click the Pair Operation tab, select a CU grouping, CU, port, or host group from the tree, select the desired pair, right-click, and then click Pairresync command. XP24000 Continuous Access Software User and Reference Guide 117 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 118
options are: • P-VOL: Port - GID - LUN of the selected volume. Note: If # is added to the end of an LDEV number (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. • P-VOL Fence Level - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 119
pairresync operation(s), click File, and then click Refresh on the menu bar of the Remote Web Console main window to update the information in the list, or use the Detailed Information dialog box (see "Viewing Continuous Access Pair Status" on page 112) to monitor the detailed status of each pair - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 120
precautions to prevent a system problem due to duplicate volumes. WARNING: As a general rule, when you want to release a Continuous Access Asynchronous pair from the MCU, HP strongly recommends that you perform the pairsplit-S operation after the update copy operation is completed. If you - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 121
not be changed. Volume: Port - GID - LUN of the selected volume. Note: If # is added to the end of an LDEV number (for example, 00:00:3C#), the LDEV is an external volume. For details on external volumes, see the HP StorageWorks XP24000 External Storage Software User's Guide. Delete Pair by Force - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 122
a disaster recovery. Note: If you release (pairsplit-S) the Continuous Access Asynchronous pair from the RCU with the Group option, while the P-VOL continues accepting I/Os, the Continuous Access Asynchronous pair is forcibly suspended. This suspend is due to the S-VOL failure (not user-requested - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 123
(s) to be migrated, and then start the Continuous Access software. If not already done, install the remote copy connections and configure the ports (initiator ports) (if migrating between storage systems), and then add the RCUs. 3. On the Continuous Access main window, select the desired CU, select - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 124
main site. Powering Off/On Continuous Access Components The user is responsible for controlling power-off activities for storage systems involved in Continuous Access operations. If you need to power off the storage system, call your HP service representative or HP technical support for assistance - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 125
a planned outage of a Continuous Access RCU or remote copy connection component: 1. Identify all Continuous Access P-VOLs which will be affected by the equipment outage. You need to know the MCU, CU, and ID (port, GID, LUN) for each of these P-VOLs. a. For an RCU power-off, identify all P-VOLs - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 126
a pinned track. See the pinned track recovery procedures for your OS, or contact your HP service representative for assistance in recovering the pinned track. 4. Restart the pair using the Paircreate dialog box, and make sure to use the Entire Volume initial copy option. Note: Make sure to specify - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 127
important files and data for disaster recovery. In addition to supporting Continuous Access remote copy operations as well as RAID Manager commands, the storage system provides battery-backed nonvolatile duplexed cache, full hardware redundancy, dynamic sparing, and an advanced RAID-5 implementation - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 128
Continuous Access remote copy operations fail. This setting should be considered for the most critical volumes for disaster recovery at the secondary host, and full recovery cannot be performed. To avoid this situation handling them. Systems that allow disk errors by means of multiplication can function - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 129
be transferred via host failover. Important: Remote copy and disaster recovery procedures are inherently complex. Consult your HP service representative on sense-level settings and recovery procedures. Note: See "Pinned Track Recovery for Continuous Access Volumes" on page 125 for information on - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 130
Asynchronous S-VOLs" on page 131). 3. Perform file recovery as needed (see "File and Database Recovery Procedures" on page 129). 4. At the remote site, connect to each RCU, and release all Continuous Access Synchronous pairs. For Continuous Access Asynchronous pairs, release all consistent pairs in - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 131
Entire Volume initial copy option, but the SVP time) will help to determine the last time this S-VOL was updated. Analyzing the Consistency of Continuous Access recovery must be done using recovery point data in the database redo log. XP24000 Continuous Access Software User and Reference Guide 131 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 132
be set to device-mode. 7. At the remote site, configure the appropriate ports to enable Continuous Access operations in the reverse direction (change target ports to initiator ports). This enables the original RCUs to send Continuous Access remote copy operations to the original MCUs to bring the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 133
S-VOLs are synchronized. If there is any possibility that the volumes are not 100% synchronized, use the Entire Volume initial copy option to be safe. 9. Vary the MCU and P-VOLs online, and start the applications at the primary site. XP24000 Continuous Access Software User and Reference Guide 133 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 134
134 Usage Scenarios - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 135
on the Remote Web Console computer. See "SIM Report" on page 142 for a brief description of the storage system service information messages (SIMs). If you need to call HP technical support, see "Calling HP Technical Support" on page 142 for instructions. XP24000 Continuous Access Software User and - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 136
. If a communications error between the Remote Web Console computer and SVP occurs, see the HP StorageWorks XP24000 Remote Web Console User's Guide for instructions. There is a pinned track on a Continuous Access volume. See Pinned Track Recovery for Continuous Access Volumes on page 125 for - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 137
order to delete the path. Then add the path/RCU using Edit Path or Add RCU. Fibre: make sure that you entered the correct Controller ID, and also make sure that the Fibre Channel topology settings of the MCU and RCU ports are correct. XP24000 Continuous Access Software User and Reference Guide 137 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 138
failed path. Check the port number, or the cable connection and retry. Install the microcode that supports the fibre remote copy function on the RCU side ports are correct. Make sure that the RCU port is configured as an RCU target port. Make sure that the RCU port and remote copy connection hardware - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 139
Error Description Corrective Action The MCU port does not work. Repair the port status on the MCU. The RCU port does not work. Repair the port status on the RCU. And then delete the /RCU using Edit Path or Add RCU. XP24000 Continuous Access Software User and Reference Guide 139 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 140
on page 141 provides troubleshooting instructions for the Continuous Access Asynchronous suspension conditions caused by the offloading timer async option, the group timeout options (copy pending and RCU ready), and recordset errors. Hardware failures which affect the storage system/shared memory of - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 141
in Figure 54 on page 142). The error message may also include a storage system SVP error code. If you need to call HP technical support for assistance, report the error code(s). Please see the storage system document HP StorageWorks XP24000 Continuous Access Software User and Reference Guide 141 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 142
the S-VOL device ID (byte 13). For further information on the storage system SIMs, see the HP StorageWorks XP24000 Remote Web Console User's Guide and/or the HP StorageWorks XP24000 Disk Array Owner's Guide, or call HP technical support for assistance. If SNMP is installed and operational for the - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 143
Continuous Access Load Balancing and Sidefile Management and Control Asynchronous Remote Copy solutions, as applicable to Disaster Recovery (DR), protect operational environments by assuring data integrity and rapid recovery at an alternate location should the operational environment at the home site - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 144
network to service the write updates does not over-commit the availability of cache/sidefile. Suspension of the remote copy environment in this configuration is probable dependent upon write update demand and network capability. 144 Continuous Access Load Balancing and Sidefile Management and Control - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 145
system PCB printed circuit board P/K package PSUE pair suspended-error PSUS pair suspended-split P-VOL primary volume RAID redundant array of independent disks RAID-1/-5 specific RAID architectures RC reference code XP24000 Continuous Access Software User and Reference Guide 145 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 146
remote dual copy remote IO service information message simplex serial number (also abbreviated as s#) simple network management protocol sense byte storage system identification secondary volume service processor synchronous serial number (also abbreviated as S/N) Continuous Access Continuous Access - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 147
Track, 41 groups See consistency group H hardware installation, 46 help obtaining, 10 host failover software, 18, 45, 129 HP technical support, 10 I initial copy operation, 18 initialization failed (RCU status), 137 initiator port, 17 XP24000 Continuous Access Software User and Reference Guide 147 - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 148
installation hardware, 46 requirements, 43 invalid port (RCU status), 138 L LDEV pair See Continuous Access pair LDKC, 15 logical disk controller, 15 logical unit, 44 LU, 44 M MCU powering off/on, 124 migration using Continuous Access, 123 N never (fence level), 128 NVS requirement for Continuous - HP XP24000 | HP StorageWorks XP24000 Continuous Access Software User and Referen - Page 149
U update copy operation, 19 W websites HP, 10 HP Subscriber's Choice for Business, 10 product manuals, 9 XP24000 Continuous Access Software User and Reference Guide 149
HP
StorageWorks
XP24000 Continuous Access Software User
and
Reference
Guide
Part
number:
T5278–96002
First
edition:
June
2007