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JULY 2007 MAGNUM 224, MAGNUM 448, STORAGELIBRARY T24, OR STORAGELOADER 2U
2-9
SCSI COMMAND PROTOCOL
Note: The commands issued to the library are independent of the commands
issued to the tape drive. For information about the commands for the tape
drive, refer to the documentation for the tape drive.
Table 2-1 SCSI command set supported by the library
When you issue this
command …
OP
Code
The library does this … Discussed
in...
INITIALIZE ELEMENT
STATUS (6 bytes)
07h Checks all element addresses for cartridges and
scans bar code labels.
Chapter 4
INITIALIZE ELEMENT
STATUS WITH RANGE
(10 bytes)
37h Checks a range of elements or all the storage
elements for cartridges and scans bar code labels.
Chapter 5
INQUIRY
(6 bytes)
12h Sends information about its parameters, including
the library serial number, to the initiator.
Chapter 6
LOG SELECT
(10 bytes)
4Ch Manages statistical information maintained by the
library.
Chapter 7
LOG SENSE
(10 bytes)
4Dh Returns statistical and condition information to the
initiator.
Chapter 8
MODE SELECT
(6 bytes)
15h Accepts specific element addresses, LCD
information, and operating parameters from the
initiator. Can also prevent access to selected
operator panel menus.
Chapter 9
MODE SENSE
(6 bytes)
1Ah Reports its operating mode parameters to the
initiator.
Chapter 10
MOVE MEDIUM (12 bytes) A5h Moves a cartridge from one location to another. Chapter 11
POSITION TO ELEMENT
(10 bytes)
2Bh Positions the cartridge loader at a specific location
(element address).
Chapter 12
PREVENT/ALLOW MEDIUM
REMOVAL
(6 bytes)
1Eh Disables or enables the interlock mechanism in the
cartridge access port, preventing or allowing the
user from accessing cartridges through the cartridge
access port.
Chapter 13
READ BUFFER
(10 bytes)
3Ch Copies the library’s microcode. Used in
conjunction with the WRITE BUFFER command.
Chapter 14
READ ELEMENT STATUS
(12 bytes)
B8h Reports the status of its medium transport, storage,
import/export, and data transfer elements to the
initiator.
Chapter 15
RECEIVE DIAGNOSTIC
RESULTS (6 bytes)
1Ch Returns diagnostic results from the last SEND
DIAGNOSTIC command.
Chapter 16
RELEASE
(6 bytes or 10 bytes)
17h
57h
Releases the library from reservations previously set
by the initiator using the RESERVE command.
Chapter 17
REQUEST SENSE (6 bytes) 03h Returns sense data to the initiator. Chapter 18
- EFERENCE 1014826 2
- ONTACTING 3
- ANDBERG DATA 3
- ORPORATION 3
- Contents 5
- SCSI REFERENCE 1014826 10
- ABOUT THIS MANUAL 17
- PRODUCT OVERVIEW 19
- 1.1.2 BACK PANEL COMPONENTS 20
- AGNUM 448 EMULATION MODES 24
- OVERVIEW OF THE LIBRARY 25
- SCSI DEVICE 25
- 2.1.1 ELEMENT TYPES 27
- 2.1.2 ELEMENT ADDRESSES 27
- Magnum 448 Element Addresses 29
- ELATIONSHIP TO THE SCSI BUS 31
- 2.2 SCSI COMMAND PROTOCOL 32
- OMMAND PROTOCOL 33
- 2.2.2 SCSI COMMAND FORMAT 34
- 2.2.3 COMMAND STATUS 35
- 2.2.4 COMMAND FORMAT ERRORS 36
- IMPLEMENTING SCSI 39
- OPERATIONS 39
- Disabling Sequential Mode 41
- Setting the Restart Option 41
- Setting the Loop Option 42
- Important 42
- ETTING ELEMENT ADDRESSES 43
- Element Addresses 45
- Element Occupied Status 46
- Bar Code Label Information 47
- 3.5 MOVING CARTRIDGES 48
- 3.7 PERFORMING DIAGNOSTICS 49
- Home Screen 50
- INITIALIZE ELEMENT 51
- STATUS (07h) 51
- 4.4 COMMAND STATUS 53
- STATUS WITH RANGE (37h) 55
- 5.4 COMMAND STATUS 58
- INQUIRY (12h) 59
- 6.3 WHAT THE LIBRARY RETURNS 60
- TANDARD INQUIRY DATA PAGE 61
- CODE 00h) 66
- Page Code – Byte 01 68
- Page Length – Byte 03 68
- 6.4 COMMAND STATUS 73
- LOG SELECT (4Ch) 75
- 7.3 COMMAND STATUS 76
- LOG SENSE (4Dh) 77
- 8.3 WHAT THE LIBRARY RETURNS 81
- 8.3.1 LOG PARAMETER FORMAT 82
- Parameter Length – Byte 03 83
- Parameter Value – Byte 04 90
- Command – Byte 04 91
- Fault Symptom Code – Byte 05 92
- Command Interface – Byte 06 93
- 8.4 COMMAND STATUS 94
- CHAPTER 8—LOG SENSE (4Dh) 96
- MODE SELECT (15h) 97
- 9.2.1 PARAMETER LIST HEADER 99
- Assigning Element Addresses 100
- ! Important 101
- HAT YOU SEND TO THE LIBRARY 103
- Page Length – Byte 01 104
- MaxStor – Byte 4, Bit 7 105
- Parameter Length – Byte 01 108
- Write Line 1 – Byte 02, Bit 3 108
- FixEnbl – Byte 02, Bit 0 109
- Auto – Byte 02, Bit 1 109
- 9.3 COMMAND STATUS 110
- MODE SENSE (1Ah) 113
- 10.3 WHAT THE LIBRARY RETURNS 115
- Mode Data Length – Byte 00 116
- HAT THE LIBRARY RETURNS 117
- CODE 1Eh) 119
- 10.4 COMMAND STATUS 130
- Check Condition 131
- CHAPTER 10—MODE SENSE (1Ah) 132
- MOVE MEDIUM (A5h) 133
- 11.4 COMMAND STATUS 137
- POSITION TO ELEMENT 139
- 12.3 COMMAND STATUS 140
- OMMAND STATUS 141
- PREVENT/ALLOW MEDIUM 143
- REMOVAL (1Eh) 143
- 13.3 COMMAND STATUS 144
- READ BUFFER (3Ch) 145
- 14.5 COMMAND STATUS 148
- CHAPTER 14—READ BUFFER (3Ch) 150
- READ ELEMENT STATUS 151
- 15.3 WHAT THE LIBRARY RETURNS 153
- 15.3.1 ELEMENT STATUS HEADER 154
- 15.3.2 ELEMENT STATUS PAGE 154
- Element Type Code – Byte 00 155
- PVolTag – Byte 01, Bit 7 155
- AVolTag – Byte 01, Bit 6 155
- 15.3.3 ELEMENT DESCRIPTORS 156
- Except – Byte 02, Bit 2 157
- TORAGE ELEMENT DESCRIPTOR 159
- Access – Byte 02, Bit 3 160
- Full – Byte 02, Bit 0 160
- SValid – Byte 09, Bit 7 161
- Invert – Byte 09, Bit 6 161
- 15.4 COMMAND STATUS 170
- RECEIVE DIAGNOSTIC 171
- RESULTS (1Ch) 171
- 16.3 WHAT THE LIBRARY RETURNS 172
- Bytes 02 and 03 – Page Length 173
- Page Code – Byte 00 173
- Page Length – Bytes 02 and 03 173
- Supported Log Pages – Byte 04 173
- Self Test – Byte 27 174
- 16.4 COMMAND STATUS 175
- RELEASE (17h OR 57h) 177
- 17.1 ABOUT THIS COMMAND 178
- 17.3 COMMAND STATUS 179
- REQUEST SENSE (03h) 181
- 18.3 WHAT THE LIBRARY RETURNS 183
- 18.4 COMMAND STATUS 186
- REQUEST VOLUME 187
- ELEMENT ADDRESS (B5h) 187
- 19.1 ABOUT THIS COMMAND 188
- 19.3 WHAT THE LIBRARY RETURNS 190
- 19.3.2 ELEMENT STATUS PAGE 191
- 19.3.3 ELEMENT DESCRIPTORS 192
- 19.4 COMMAND STATUS 204
- Reservation Conflict 205
- RESERVE (16h OR 56h) 207
- 20.1 ABOUT THIS COMMAND 208
- 20.3 COMMAND STATUS 209
- REZERO UNIT (01h) 211
- SEND DIAGNOSTIC (1Dh) 213
- DDITIONAL DIAGNOSTIC DATA 215
- ELF TEST PAGE (PAGE CODE F0h) 216
- 22.4 COMMAND STATUS 217
- SEND VOLUME TAG (B6h) 219
- ARAMETER LIST 221
- 23.4 COMMAND STATUS 222
- TEST UNIT READY (00h) 225
- WRITE BUFFER (3Bh) 227
- 25.4 COMMAND STATUS 230
- CHAPTER 25—WRITE BUFFER (3Bh) 232
- ERROR CODES 233
- IBRARY “FATAL” ERROR MESSAGES 243
- A.3 ERROR RECOVERY PROCEDURES 258
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