Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 9)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
19.62 WRITE SAME (16) - (93) .....................................................................................303
19.63 WRITE SAME (32) - (7F/0D)...............................................................................304
20.0 SCSI Status Byte ..........................................................................................................307
21.0 Additional information...............................................................................................309
21.1 Obtaining an AL_PA ...............................................................................................309
21.2 Loop Initialization Procedure ..................................................................................309
21.3 Flow Control ............................................................................................................311
21.4 Login Requirements.................................................................................................311
21.5 Public Loop Operation.............................................................................................312
21.5.1 NL_Port Initialization .....................................................................................313
21.6 SCSI Protocol ..........................................................................................................315
21.6.1 Priority of SCSI Status Byte Reporting ..........................................................315
21.6.2 Invalid LUN Processing..................................................................................315
21.6.3 Overlapped Commands...................................................................................315
21.6.4 Command Processing During Execution of Active I/O Process ....................316
21.6.5 Unit Attention Condition ................................................................................317
21.6.6 Command Processing During Startup and Format Operations.......................319
21.6.7 Internal Error Condition..................................................................................319
21.6.8 Deferred Error Condition................................................................................319
21.6.9 Degraded Mode...............................................................................................320
21.6.10 Command Processing while Reserved..........................................................327
21.7 Priority Commands ..................................................................................................327
21.8 Command Queuing ..................................................................................................328
21.8.1 Queue Depth ...................................................................................................328
21.8.2 Queue Full Status............................................................................................328
21.8.3 Effects of LIP on Command Queuing ............................................................328
21.8.4 Termination of I/O Processes .........................................................................328
21.9 Command Reordering..............................................................................................328
21.10 Concurrent I/O Process ..........................................................................................328
21.11 Write Cache ...........................................................................................................329
21.12 Automatic Rewrite/Reallocate ...............................................................................329
21.13 Segmented Caching ...............................................................................................331
21.13.1 Overview.......................................................................................................331
21.13.2 Read Ahead...................................................................................................331
21.14 Multiple Initiator Systems .....................................................................................331
21.14.1 Sense Data.....................................................................................................331
21.14.2 Mode Pages...................................................................................................331
21.15 Enclosure Services .................................................................................................331
21.15.1 Enclosure Initiated ESI .................................................................................332
21.16 Multiple Initiator Environment ..............................................................................332
21.16.1 Initiator Sense Data.......................................................................................332
21.16.2 Initiator Mode Select/Mode Sense Parameters .............................................332
21.17 Reset.......................................................................................................................332
21.17.1 Reset Sources ................................................................................................333
21.17.2 Reset Actions ................................................................................................333
21.18 Diagnostics.............................................................................................................333