Hitachi HUS151473VL3800 - Ultrastar 73.4 GB Hard Drive Specifications page 10

19.1.4 Parallel Protocol Request (01, 06, 04h) ................................................................217
19.1.5 Save Data Pointer (02) ..........................................................................................219
19.1.6 Restore Pointers (03) ............................................................................................219
19.1.7 Disconnect (04).....................................................................................................220
19.1.8 Initiator Detected Error (05) .................................................................................220
19.1.9 Abort Task Set (06)...............................................................................................220
19.1.10 Message Reject (07)............................................................................................220
19.1.11 No Operation (08) ...............................................................................................220
19.1.12 Message Parity Error (09)...................................................................................221
19.1.13 Linked Task Complete (0A) ...............................................................................221
19.1.14 Linked Task Complete With Flag (0B) ..............................................................221
19.1.15 Target Reset (0C)................................................................................................221
19.1.16 Abort Task (0D)..................................................................................................221
19.1.17 Clear Task Set (0E).............................................................................................221
19.1.18 Logical Unit Reset (17).......................................................................................221
19.1.19 Queue Tag messages (20H, 21H, 22H) ..............................................................222
19.1.20 Ignore Wide Residue ..........................................................................................222
19.1.21 Identify (80 - FF) ................................................................................................223
19.2 Supported message functions.........................................................................................224
19.3 Attention condition ........................................................................................................225
20.0 Additional information......................................................................................................227
20.1 SCSI Protocol ................................................................................................................227
20.1.1 Priority of SCSI Status Byte Reporting ................................................................227
20.1.2 Invalid LUN in Identify Message .........................................................................227
20.1.3 Incorrect Initiator Connection...............................................................................228
20.1.4 Command Processing During Execution of Active I/O Process ..........................228
20.1.5 Unit Attention Condition ......................................................................................230
20.1.6 Command processing during startup and format operations ................................231
20.1.7 Internal Error Condition........................................................................................231
20.1.8 Deferred Error Condition......................................................................................231
20.1.9 Degraded Mode.....................................................................................................232
20.1.10 Command Processing while Reserved................................................................239
20.2 Priority Commands ........................................................................................................239
20.3 Command Queuing ........................................................................................................240
20.3.1 Queue Depth .........................................................................................................240
20.3.2 Tagged Queuing....................................................................................................240
20.3.3 Untagged Queuing ................................................................................................240
20.3.4 Command Queuing Rule ......................................................................................240
20.3.5 Queue Full Status..................................................................................................240
20.3.6 Device Behavior on Command Queuing ..............................................................240
20.4 Command Reordering....................................................................................................241
20.5 Concurrent I/O Process ..................................................................................................241
20.6 Write Cache ...................................................................................................................241
20.7 Automatic Rewrite/Reallocate .......................................................................................242
20.8 Segmented Caching .......................................................................................................244
20.8.1 Overview...............................................................................................................244
Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification