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Logical Unit Number (LUN) Scanning

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4U Unit with only FH drives (1 logical library) SCSI Element Slot 4 257 3 2 256 1 4U Unit with FH and HH drives (1 logical library) SCSI Element Slot 4 258 3 257 2 256 1 a77ug165 Figure 3-5. Examples of SCSI element addressing The SCSI specification does not allow gaps in the SCSI element addressing. Special handling is needed for empty drive slots to fulfill the specification. Also temporarily removed drives need to have their addresses preserved to not confuse the attached host and host application. Generally only drives which are currently physically available or temporarily removed are reported. Empty (unused) slots located at the bottom or the top should not be reported, with an exception in case of a "removed" condition. A drive slot which does not contain a drive, and has a position between used slots, needs to be reported as a SCSI element. To signal the host application that this slot is not usable, its ACCESS bit will be disabled. Note: When reducing the number of drives in your library, update the Logical Library configuration. This will remove the Attention LED on the front panel and the exclamation mark on the Home screen indicating that a drive is missing. Updating the Logical Library configuration will also update the drive element addressing and drive numbering. Replacing LTO half height drives with full height drives may require you to execute Restore Factory Defaults to correctly update the drive element addressing and drive numbering. See "Configure Library: Save/Restore Configuration" on page 5-56. Logical Unit Number (LUN) Scanning The library uses a single SCSI or Loop ID per drive and dual LUNs to control the tape drive (LUN 0) and library accessor (LUN 1). The library requires a Host Bus Adapter (HBA) that supports LUN scanning. If it is not enabled, your host system will not scan beyond LUN 0 and will fail to discover the library. It will only see the tape drive. Important: Some HBAs, such as RAID controllers, do not support LUN scanning. 3-6 Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide

Section	Page
Read This First	5
Minimum Firmware Levels for Common Library Features	5
Contacting Dell	5
Contents	7
Figures	9
Tables	13
Safety and Environmental Notices	15
Danger Notice	15
Caution Notice	15
Laser Safety and Compliance	16
Class I Laser Product	16
Performing the Safety Inspection Procedure	16
Rack Safety	17
Preface	21
Related Publications	21
Chapter 1. Product Description	23
Front Panel	23
Rear Panel	25
Bar Code Reader	27
Encryption	27
Supported Internet Protocols	29
SNMP Messaging	29
SNMP Traps	29
Maximum Library Storage Capacity and Data Transfer Rate	30
Ultrium Tape Drives	30
Speed Matching	32
Channel Calibration	32
Power Management	32
Media	32
Library Specifications	33
Product Environment	35
Supported Device Drivers	35
Chapter 2. User Interfaces	37
Operator Control Panel	37
Operator Control Panel Philosophy	37
Power-ON Display	38
Note about the Front Panel LEDs	38
Input Modes	39
Selecting Predefined Values	39
Toggling Values	40
Entering Numerical Values	40
Power ON/OFF	40
Web User Interface	40
Login	41
System Status	42
Web User Interface Help Pages	44
Logging out of the Web User Interface	44
Chapter 3. Installation Planning	45
Determining the Number of Logical Libraries	45
Basic Guidelines	45
Library Sharing	45
Using Multiple Logical Libraries for Library Sharing	46
Using Multiple Control Paths	46
Using Multiple Control Paths for Path Failover	46
Library Partitioning and Element Addressing	46
Logical Unit Number (LUN) Scanning	50
Host Interfaces	51
SCSI Interface	51
Physical Characteristics of the SCSI Interface	51
Using Multiple SCSI Buses	52
Terminating the Bus	53
SCSI Differential - LVD	53
SAS Interface	53
Fibre Channel Interface	53
Cables and Speeds	54
Using Zoning to Isolate Devices and Enhance Security	54
Sharing on a Storage Area Network	54
Chapter 4. Installation and Configuration	57
Using the Library Configuration Form	57
Installing Your Library	57
Choosing a Location	57
Unpacking the Library	58
Verifying the Shipment	58
Installing the Library Foot Pads (for Desktop Installation ONLY)	59
Removing and Storing the Shipping Lock	60
Rackmounting the Library (for Rack Installation ONLY)	61
Attaching the Library to a Server	67
Connecting the Host Interface Cable	67
Connecting a Power Cord	69
Configuring Your Library	70
Choosing Your Configuration Method	70
Using Factory Defaults as Your Configuration	70
Configuring Your Library using the Web User Interface	71
Establishing Remote Access to Your Library	71
Logging on to the Web User Interface	73
Verifying/Updating Firmware	74
Choosing General Library Settings	75
Choosing the Number of Logical Libraries for Your Library	77
Entering Path Failover Feature Activation Key	77
Setting Up Encryption	78
Choosing Drive(s) Interface Identification/Settings	80
Entering Library Network Settings	80
Entering User Access Information using the Web User Interface	82
Entering Date and Time using the Web User Interface	84
Configuring Logs and Traces using the Web User Interface	84
Entering Email Notification Information using the Web User Interface	85
Configuring SNMP Settings	85
Testing Encryption Configuration for Library Managed Encryption	86
Restoring Factory Default Settings using the Web User Interface	87
Logging out of the Web User Interface	87
Configuring Your Library using the Operator Control Panel	87
Preparing the Host	87
Verifying the Connection	88
Cartridge Magazines	88
Populating the Library with Data Cartridges	92
Inserting the Cleaning Cartridge	93
Chapter 5. Operations	95
Operator Control Panel Navigation	101
Operator Control Panel Menu Tree	103
Monitor Menu	104
Monitor: Library	104
Monitor: Drive	106
Monitor: Inventory	108
Control Menu	110
Control: Open I/O Station	110
Control: Move Cartridges	110
Control: Magazine	111
Control: Re-Inventory	112
Configure Menu	112
Configure: Logical Libraries	112
Configure: Library	114
Configure: Drive	117
Configure: Network	118
Configure: Set Access PIN	119
Configure: Save/Restore	121
Configure: Set Date and Time	123
Configure: Path Failover	123
Service Menu	124
Service: Library Verify	124
Service: Run Tests	125
Service: Service (Drives)	125
Service: Display Contrast	126
Service: Telnet Service Port	127
Web User Interface Menus	127
Monitor Library Menu	128
Monitor Library: Library Identity	128
Monitor Library: Drive Identity	129
Monitor Library: Library Status	131
Monitor Library: Drive Status	132
Monitor Library: Inventory	134
Manage Library Menu	136
Manage Library: Move Media	136
Manage Library: Perform Inventory	137
Manage Library: Release Magazine	137
Configure Library Menu	138
Configure Library: General	138
Configure Library: Logical Libraries	139
Configure Library: Path Failover	140
Configure Library: Encryption	141
Configure Library: Drives	143
Configure Library: Network	144
Configure Library: User Access	146
Configure Library: Date & Time	148
Configure Library: Logs & Traces	148
Configure Library: Email Notification	149
Configure Library: SNMP	150
Configure Library: Save/Restore Configuration	150
Service Library Menu	151
Service Library: Clean Drive	151
Service Library: Advanced Diagnostics (for Service Personnel Only)	152
Service Library: View Logs	152
Service Library: View Drive Logs	153
Service Library: Save Drive Dump	154
Service Library: Perform Diagnostics	154
Service Library: Key Path Diagnostics	155
Service Library: Upgrade Firmware	156
Service Library: Reboot	157
Import and Export Media during Normal Library Operation	158
Configuring I/O Stations and Reserving Slots	159
Chapter 6. Using Ultrium Media	161
Data Cartridges	161
Cartridge Compatibility	162
WORM (Write Once, Read Many)	163
WORM Media	163
Data Security on WORM Media	163
WORM Media Errors	163
Cleaning Cartridge	164
Bar Code Label	164
Guidelines for Using Bar Code Labels	165
Write-Protect Switch	166
Handling the Cartridges	167
Provide Training	167
Ensure Proper Packaging	167
Provide Proper Acclimation and Environmental Conditions	168
Perform a Thorough Inspection	168
Handle the Cartridge Carefully	169
Environmental and Shipping Specifications for Tape Cartridges	169
Chapter 7. Troubleshooting	171
Installation Problems	176
Library Recovery Problem Determination	176
Procedures for Isolating CRU Problems	177
Isolating a Power Supply Problem	177
Isolating Drive Sled Problems	179
Isolating a Library Controller Card vs. Accessor Enclosure Problem	180
Isolating Web User Interface Problems	181
Isolating Accessor Scanner Problems	181
Isolating Host Attachment Interface Problems	182
Identifying a Suspect Cartridge	182
Chapter 8. Error Codes	183
Chapter 9. Service Procedures	197
Removing Cartridges from Magazine Slots	197
Releasing the Magazines Manually	197
Using the ITDT Firmware Update, Dump Retrieval and Drive Test Tool	200
Chapter 10. Check, Adjust, Remove, and Replace	201
Tools Required	201
Electrostatic Discharge	201
Relocating Your Library	201
Removing/Installing/Adding a Tape Drive Sled	203
Removing a Tape Drive Sled	204
Installing a Tape Drive Sled	206
Adding a Tape Drive Sled	209
Configuring the Tape Drive	210
Replacing a Power Supply	210
Replacing a Library Controller Card	211
Replacing Cartridge Magazines	213
Replacing the Library Enclosure	213
Preparing the Defective Library for Replacement	213
Unpacking and Preparing the Replacement Library Enclosure	214
Installing Your Drive(s) in the Replacement Library Enclosure	216
Swapping Power Supplies	219
Swapping Library Controller Cards	220
Swapping Cartridge Magazines	222
Installing the Replacement Library Enclosure	225
Completing the Installation of the Replacement Library Enclosure	227
Returning the Defective Library Enclosure	227
Appendix A. SCSI Element Types, SCSI Addresses, and Physical Configurations	229
2U Library I/O Slot, Storage Slots and Drive Slot Element Addresses and Physical Locations	229
4U Library I/O Slots, Storage Slots, and Drive Slots Element Addresses and Physical Locations	230
Library Partitioning and Element Addressing	231
Appendix B. TapeAlert Flags	237
TapeAlert Flags Supported by the Library	237
TapeAlert Flags Supported by the Drive	238
Appendix C. Sense Data	243
Library Sense Data	243
Drive Sense Data	248
Appendix D. Enabling LUN Support in Linux	257
Red Hat Enterprise Linux	258
Enabling LUN Support in Netware	258
Appendix E. Notes on IPv6 Compatibility with Windows 2003/XP and 2008/Vista	261
Notes on IPv6 Compatibility with Linux	262
Appendix F. SNMP Status MIB Variables and Traps	263
Appendix G. Library Configuration Form	265
Appendix H. Accessibility	267
Glossary	269
Index	277
A	277
B	277
C	277
D	277
E	277
F	277
G	277
H	277
I	277
K	278
L	278
M	278
N	278
O	278
P	278
Q	278
R	278
S	278
T	278
U	279
V	279

Match case Limit results 1 per page

The SCSI specification does not allow gaps in the SCSI element addressing. Special

handling is needed for empty drive slots to fulfill the specification. Also

temporarily removed drives need to have their addresses preserved to not confuse

the attached host and host application. Generally only drives which are currently

physically available or temporarily removed are reported. Empty (unused) slots

located at the bottom or the top should not be reported, with an exception in case

of a “removed” condition. A drive slot which does not contain a drive, and has a

position between used slots, needs to be reported as a SCSI element. To signal the

host application that this slot is not usable, its ACCESS bit will be disabled.

Note:

When reducing the number of drives in your library, update the Logical

Library configuration. This will remove the Attention LED on the front

panel and the exclamation mark on the Home screen indicating that a drive

is missing.

Updating the Logical Library configuration will also update the drive element

addressing and drive numbering. Replacing LTO half height drives with full height

drives may require you to execute Restore Factory Defaults to correctly update the

drive element addressing and drive numbering. See “Configure Library:

Save/Restore Configuration” on page 5-56.

Logical Unit Number (LUN) Scanning

The library uses a single SCSI or Loop ID per drive and dual LUNs to control the

tape drive (LUN 0) and library accessor (LUN 1). The library requires a Host Bus

Adapter (HBA) that supports LUN scanning. If it is not enabled, your host system

will not scan beyond LUN 0 and will fail to discover the library. It will only see

the tape drive.

Important:

Some HBAs, such as RAID controllers, do not support LUN scanning.

SCSI Element

Slot

SCSI Element

Slot

257

4U Unit with only FH drives

(

l libr

ry)

4U Unit with FH

nd HH drives

(

l libr

ry)

a77ug1

Figure 3-5. Examples of SCSI element addressing

3-6

Dell PowerVault TL2000 Tape Library and TL4000 Tape Library User's Guide