Technical information
HGST Ultrastar C15K600 Hard Disk Drive Specification
9
20.1.10 Command Processing while Reserved ............................................................................................................... 310
20.2 Priority Commands .................................................................................................................................................... 312
20.3 Command Queuing .................................................................................................................................................... 312
20.3.1 Queue Depth ..................................................................................................................................................... 312
20.3.2 Queue Full Status .............................................................................................................................................. 312
20.3.3 Termination of I/O Processes............................................................................................................................. 312
20.4 Command Reordering ................................................................................................................................................ 313
20.5 Concurrent I/O Process .............................................................................................................................................. 313
20.6 Write Cache................................................................................................................................................................ 313
20.7 Automatic Rewrite/Reallocate ................................................................................................................................... 313
20.8 Segmented Caching ................................................................................................................................................... 315
20.8.1 Overview ........................................................................................................................................................... 315
20.8.2 Read Ahead ........................................................................................................................................................ 315
20.9 Multiple Initiator Systems .......................................................................................................................................... 315
20.9.1 Sense Data ......................................................................................................................................................... 315
20.9.2 Mode Pages ....................................................................................................................................................... 315
20.10 Multiple Initiator Environment .............................................................................................................................. 315
20.10.1 Initiator Sense Data ........................................................................................................................................... 315
20.10.2 Initiator Mode Select/Mode Sense Parameters ................................................................................................ 315
20.11 Reset ...................................................................................................................................................................... 316
20.11.1 Initiator Sense Data ........................................................................................................................................... 316
20.11.2 Reset Actions ..................................................................................................................................................... 316
20.12 Diagnostics ............................................................................................................................................................ 317
20.12.1 Power on Diagnostics ........................................................................................................................................ 317
20.12.2 Self-test via SEND DIAGNOSTIC Command ........................................................................................................ 317
20.13 Idle Time Function ................................................................................................................................................. 320
20.14 Command Time out Limits ..................................................................................................................................... 320
20.14.1 Reassignment Time ........................................................................................................................................... 320
20.14.2 Format Time ...................................................................................................................................................... 320
20.14.3 Start/Stop Unit Time ......................................................................................................................................... 320
20.14.4 Medium Access Command Time ....................................................................................................................... 320
20.14.5 Time-out Limits for Other Commands .............................................................................................................. 321
20.15 Recommended Initiator ERP .................................................................................................................................. 322
20.15.1 Drive Service Strategy ........................................................................................................................................ 322
20.15.2 Recommendations for System Error Log ........................................................................................................... 322
20.15.3 Data Recovery Procedure .................................................................................................................................. 323
20.15.4 Non data Error Recovery Procedure .................................................................................................................. 325
21 Firmware Security........................................................................................................................................ 331
21.1 Referenced Specifications and Standards .................................................................................................................. 331
21.1.1 TCG Specifications ............................................................................................................................................. 331
21.1.2 Federal Information Processing Standards (FIPS) .............................................................................................. 331
21.1.3 National Institute of Standards (NIST) ............................................................................................................... 331
21.1.4 Department of Defense ..................................................................................................................................... 333
21.1.5 RSA Laboratories Standards ............................................................................................................................... 333
21.1.6 Other Standards ................................................................................................................................................ 333
21.2 Implementation Exceptions ....................................................................................................................................... 333
21.3 Implementation Features and Details Outside of TCG Specifications ........................................................................ 333