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SCSI Element Addressing
Every logical library starts at the first drive slot with the current assigned element
start address (default value 256). It will be incremented from the bottom to the top
slots for every drive slot. There is one exception to this addressing scheme to
accommodate libraries currently in the field. A 4U library which contains only full
height drives will continue to have the addresses assignments 256 and 257, thus
causing no interruptions to their operation. Drive slots will still be incremented by
1 for each drive slot position.
Note:
Exchanging drives with different form factors will result in the library
needing to be reconfigured.
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 drives
which are temporarily removed need to have their address preserved to not
confuse the attached host and host application. Generally only drives are reported
which are currently physically available or temporarily removed. Empty (unused)
slots which are 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.
a77ug164
Drive 3
256
Element Address
Drive 2
256
Element Address
Drive 1
256
Element Address
Magazine
1
Magazine
2
Magazine
3
Magazine
4
Front side
Drive 4
256
Element Address
Figure A-4. Configuration of a Four Partition System
SCSI Element Slot
4
3
2
1
SCSI Element Slot
4
3
2
1
257
256
257
256
258
4U Unit with only FH drives
(1 logical library)
4U Unit with FH and HH drives
(1 logical library)
a77ug165
Figure A-5. Examples of SCSI Element Addressing
Appendix A. SCSI Element Types and Addresses A-5
- User’s Guide 1
- Read this First 5
- Contents 7
- Figures 9
- Danger Notice 13
- Caution Notice 13
- Class I Laser Product 14
- Rack Safety 15
- Preface 17
- Front Panel 19
- Rear Panel 21
- Internal View of Library 23
- Bar Code Reader 24
- Encryption 24
- SNMP Messaging 26
- Ultrium Tape Drives 27
- Speed Matching 28
- Channel Calibration 28
- Power Management 29
- Library Specifications 29
- Operation Specifications 30
- Environmental Specifications 30
- Product Environment 31
- Supported Device Drivers 31
- Operator Control Panel 33
- Power-ON Display 34
- Input Modes 35
- Power ON/OFF 36
- Web User Interface 36
- System Status 38
- Basic Guidelines 41
- Library Sharing 41
- Host Interfaces 46
- SCSI Interface 46
- Using Multiple SCSI Buses 47
- SAS Interface 48
- Fibre Channel Interface 48
- Cables and Speeds 49
- Installing Your Library 51
- Choosing a Location 51
- Unpacking the Library 52
- Verifying the Shipment 52
- 2. Store the lock ( 55
- ) and label ( 55
- Figure 4-5 on page 4-6 55
- Connecting a Power Cord 63
- Configuring Your Library 64
- Verifying/Updating Firmware 67
- Setting Up Encryption 71
- Interface 77
- Configuration 78
- Preparing the Host 79
- Verifying the Connection 79
- Cartridge Magazines 80
- 2U Library I/O Station 81
- 4U Library I/O Station 82
- Chapter 5. Operations 87
- Chapter 5. Operations 5-3 89
- Chapter 5. Operations 5-5 91
- Chapter 5. Operations 5-7 93
- Chapter 5. Operations 5-9 95
- Monitor Menu 97
- Monitor: Drive 99
- Monitor: Inventory 101
- Control Menu 102
- Control: Move Cartridges 103
- Control: Magazine 103
- Configure Menu 104
- Chapter 5. Operations 5-19 105
- Configure: Library 106
- Chapter 5. Operations 5-21 107
- Configure: Drive 108
- Configure: Network 109
- Configure: Set Access PIN 110
- Chapter 5. Operations 5-25 111
- Service Menu 112
- Service: Run Tests 113
- Service: Service (Drives) 113
- Drive Tests 114
- Clean Drive 114
- Drive Power 114
- Web User Interface Menus 115
- Monitor Library Menu 116
- Chapter 5. Operations 5-31 117
- Chapter 5. Operations 5-33 119
- Chapter 5. Operations 5-35 121
- Drive Inventory 123
- Magazine Inventory 123
- Configure Library Menu 124
- Chapter 5. Operations 5-39 125
- Chapter 5. Operations 5-41 127
- Configure Library: Drives 129
- Configure Library: Network 130
- Chapter 5. Operations 5-45 131
- Chapter 5. Operations 5-47 133
- Manage Library Menu 135
- Service Library Menu 136
- View Logs 137
- View Drive Logs 137
- Save Drive Dump 138
- Chapter 5. Operations 5-53 139
- Service Library: Reboot 141
- Import Media 141
- Export Media 142
- Dedicated Cleaning Slot 143
- Reserving Slots 143
- Data Cartridges 145
- Cartridge Compatibility 146
- WORM Media 147
- WORM Media Errors 147
- Cleaning Cartridge 147
- Bar Code Label 148
- Write-Protect Switch 149
- Handling the Cartridges 150
- Provide Training 150
- Ensure Proper Packaging 150
- Chapter 7. Troubleshooting 155
- Maintenance Problems 156
- Problem 165
- Chapter 8. Error Codes 169
- Tools Required 187
- Electrostatic Discharge 187
- Relocating Your Library 187
- 1 SCSI cable 190
- 2U Library 4U Library 193
- Swapping Power Supplies 208
- Enclosure 211
- Mixing of Drives 215
- SCSI Element Addressing 217
- Appendix C. Sense Data 225
- 30h 07h Cleaning failure 226
- Drive Sense Data 230
- Red Hat Enterprise Linux 240
- 2003/XP and 2008/Vista 243
- Windows 2008/Vista 244
- Notices 247
- Glossary 249
- Numbers 249
- Glossary H-3 251
- Glossary H-5 253
- Glossary H-7 255
- Glossary H-9 257
- Printed in USA 264
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