HGST HUS724040ALS640 User Manual

HGST Ultrastar 7K4000 (SAS) Hard Disk Drive Specification
18.57 WRITE AND VERIFY (12) - (AE).......................................................................262
18.58 WRITE AND VERIFY (16) - (8E)........................................................................263
18.59 WRITE AND VERIFY (32) - (7F/0C)..................................................................264
18.60 WRITE BUFFER (3B) ..........................................................................................265
18.60.1 Combined Header And Data (Mode 00000b)...............................................265
18.60.2 Write Data (Mode 00010b)...........................................................................266
18.60.3 Download Microcode (Mode 00100b) .........................................................266
18.60.4 Download Microcode and Save (Mode 00101b) -Single Binary File ..........267
18.60.5 Download Microcode and Save (Mode 00111b) - Multiple Binary Files....267
18.60.6 Write Data to Echo Buffer (Mode 01010b)..................................................267
18.60.7 Download microcode with offsets, save, and defer activate (Mode 01110b)268
18.60.8 Activate deferred microcode mode (Mode 01111b).....................................268
18.60.9 Enable Expander Communications Protocol (Mode 11010b)......................268
18.61 WRITE LONG (10) (3F) ......................................................................................269
18.62 WRITE LONG (16) (9F) .......................................................................................271
18.63 WRITE SAME (10) - (41).....................................................................................272
18.64 WRITE SAME (16) - (93).....................................................................................273
18.65 WRITE SAME (32) - (7F/0D)...............................................................................274
19.0 SCSI Status Byte.........................................................................................................277
20.0 Additional information................................................................................................279
20.1 SCSI Protocol ..........................................................................................................279
20.1.1 Priority of SCSI Status Byte Reporting..........................................................279
20.1.2 Invalid LUN Processing..................................................................................279
20.1.3 Overlapped Commands...................................................................................280
20.1.4 Command Processing During Execution of Active I/O Process ....................280
20.1.5 Unit Attention Condition ................................................................................281
20.1.6 Command Processing During Startup and Format Operations.......................283
20.1.7 Internal Error Condition..................................................................................283
20.1.8 Deferred Error Condition................................................................................283
20.1.9 Degraded Mode...............................................................................................284
20.1.10 Command Processing while Reserved..........................................................291
20.2 Priority Commands..................................................................................................291
20.3 Command Queuing..................................................................................................292
20.3.1 Queue Depth ...................................................................................................292
20.3.2 Queue Full Status............................................................................................292
20.3.3 Termination of I/O Processes .........................................................................292
20.4 Command Reordering..............................................................................................292
20.5 Concurrent I/O Process............................................................................................292
20.6 Write Cache .............................................................................................................292
20.7 Automatic Rewrite/Reallocate.................................................................................293
20.8 Segmented Caching .................................................................................................295
20.8.1 Overview.........................................................................................................295
20.8.2 Read Ahead.....................................................................................................295
20.9 Multiple Initiator Systems .......................................................................................295
20.9.1 Sense Data.......................................................................................................295
20.9.2 Mode Pages.....................................................................................................295

HGST HUS724040ALS640 Specifications

General

Brand	HGST
Model	HUS724040ALS640
Category	Storage
Language	English