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SCSI-2 Drive Command Set
Read (Group 1) Command (28H)
Chapter 22-82
Read (Group 1) Command (28H)
This command reads data from the specified logical block address.
NOTE The Mode Select Commands (15H, 55H) impact read, write, format, and
erase commands.
DPO A Disable Page Out bit of 1 instructs the target not to
store readahead data in cache after the read data has
been transferred to the initiator.
A DPO bit of 0 instructs the target it may store
readahead data in the cache after the read data has
been transferred to the initiator.
NOTE The DPO bit is ignored in 9.1 and 5.2 Gbyte capacity drives.
Table 2-75 Read (Group 1) Command CDB
Byte 7 6 5 4 3 2 1 0
0 Operation Code (28H)
1 Logical Unit Number
(0)
DPO FUA Reserved (0) RelAdr
2 Starting Logical Block Address (MSByte)
3 Starting Logical Block Address
4 Starting Logical Block Address
5 Starting Logical Block Address (LSByte)
6 Reserved (0)
7 Transfer Length (MSByte)
8 Transfer Length (LSByte)
9 PBA Reserved (0) Flag Link
- Command Reference 2
- Revision History 3
- Typographical Conventions 4
- In This Manual 5
- Contents 10
- 1 SCSI Command Overview 20
- Drive Control Commands 22
- Good 00H 33
- Check Condition 02H 33
- Condition Met 04H 33
- Busy 08H 34
- Intermediate/Good 10H 34
- Reservation Conflict 18H 34
- Queue Full 28H 34
- Conditions 35
- 2 SCSI-2 Drive Command Set 38
- Flag, Link, and RelAdr 44
- Test Unit Ready Command (00H) 45
- Sense Data Format 48
- Field Pointer Types 50
- Format Unit Command (04H) 52
- Reassign Blocks Command (07H) 56
- Read (Group 0) Command (08H) 58
- Write (Group 0) Command (0AH) 60
- Seek (Group 0) Command (0BH) 62
- Mode Select Command (15H) 68
- Mode Select Header 70
- Read-Write Error Recovery 71
- Disconnect-Reconnect 73
- Caching Page 08H 74
- Control Mode Page 0AH 76
- Vendor Unique Format Page 20H 79
- Format Mode 03H 80
- Vendor Unique Page 21H 83
- DIP Switch Locations 88
- Read-Write Error Recover Page 94
- Disconnect-Reconnect Page 02H 96
- Control Mode Page (0AH) 100
- Medium Types 101
- SCSI-2 Drive Commands 102
- Vendor Unique 103
- Format Mode 104
- Read Capacity Command (25H) 117
- Read (Group 1) Command (28H) 119
- Seek (Group 1) Command (2BH) 124
- Pre-Fetch (34H) 131
- Synchronize Cache (35H) 132
- Write Buffer Command (3BH) 136
- Read Buffer Command (3CH) 139
- Read Long Command (3EH) 141
- Write Long Command (3FH) 143
- Log Select Command (4CH) 146
- Parameter List Data 147
- Log Sense Command (4DH) 148
- Supported Log Pages 00H 149
- Read (Group 5) Command (A8H) 165
- Read Long Command (DEH) 182
- Write Long Command (DFH) 184
- SCSI-2 Drive Command Set 187
- Chapter 22-150 187
- 3 Jukebox SCSI-2 Command Set 188
- Numerical List of Commands 189
- Alphabetical List of Commands 191
- Rezero Unit Command (01H) 194
- Request Sense Command (03H) 195
- Rotate Mailslot Command (0CH) 200
- Inquiry Command (12H) 201
- Inquiry Command Data 202
- Vital Product Data Pages 203
- Reserve Command (16H) 205
- Release Command (17H) 207
- Mode Sense Command (1AH) 208
- Transport Element (Picker) 212
- Device Capabilities 213
- Send Diagnostic Command Data 223
- Error Logs Table Format 236
- Move Success Log Table Format 240
- Force Log Data Format 241
- Recovery Log Data Format 242
- Drive Log Data Format 244
- Odometer Log Data Format 245
- Run-Time Log Data Format 246
- Retry Log Data Format 248
- Move History Log Data Format 250
- Move Medium Command (A5H) 251
- Read Element Status Data 256
- A Drive Error Codes 264
- Chapter Overview 265
- Drive Error Codes 266
- Internal Error Codes 272
- DSP Error Codes 282
- Drive Error Codes 287
- Appendix AA-24 287
- B Autochanger Error Codes 288
- Request Sense Error Codes 290
- Autochanger Error Codes 292
- Recovery 295
- Hardware Error Codes 306
- Autochanger Move Error Codes 316
- Diagnostic Tests 327
- Initialize Element 332
- Autochanger Error Codes 339
- Appendix BB-52 339
- Appendix C C-1 340
- Field Replaceable Units 342
- Appendix CC-6 345
- D Micro/Macro-Moves 346
- Micro/Macro-Moves 348
- Micro/Macro-Moves 369
- Appendix DD-24 369
- E Disconnect Timeout Settings 370
- Disconnect Timeout Settings 371
- Disconnect Timeouts 372
- Appendix EE-4 373
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