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Contents
viii C141-E167
CHAPTER 2 Data Buffer Management................................................................................................ 2-1
2.1 Data Buffer.................................................................................................................................... 2-1
2.1.1 Data buffer configuration and basic operation....................................................................... 2-1
2.1.2 Operation mode setting.......................................................................................................... 2-5
2.2 Look-Ahead Cache Feature .......................................................................................................... 2-6
2.2.1 Caching operation.................................................................................................................. 2-6
2.2.2 Caching parameters................................................................................................................ 2-8
2.2.3 Look-Ahead operation, Look-Ahead volume........................................................................ 2-9
2.3 Write Cache ................................................................................................................................ 2-10
CHAPTER 3 Command Specifications.................................................................................................. 3-1
3.1 Control/Sense Commands............................................................................................................. 3-1
3.1.1 TEST UNIT READY (00)..................................................................................................... 3-1
3.1.2 INQUIRY (12)....................................................................................................................... 3-2
3.1.3 READ CAPACITY (25)...................................................................................................... 3-13
3.1.4 CHANGE DEFINITION (40).............................................................................................. 3-14
3.1.5 MODE SELECT (15) .......................................................................................................... 3-19
3.1.6 MODE SELECT EXTENDED (55) .................................................................................... 3-26
3.1.7 MODE SENSE (1A)............................................................................................................3-28
3.1.8 MODE SENSE EXTENDED (5A)...................................................................................... 3-34
3.1.9 REZERO UNIT (01)............................................................................................................ 3-35
3.1.10 START/STOP UNIT (1B) ................................................................................................... 3-36
3.1.11 RESERVE (16).................................................................................................................... 3-37
3.1.12 RESERVE EXTENDED (56)............................................................................................. 3-40
3.1.13 RELEASE (17) .................................................................................................................... 3-41
3.1.14 RELEASE EXTENDED (57)............................................................................................. 3-42
3.1.15 REQUEST SENSE (03)....................................................................................................... 3-42
3.1.16 LOG SELECT (4C) ............................................................................................................. 3-44
3.1.17 LOG SENSE (4D) ............................................................................................................... 3-48
3.1.18 PERSISTENT RESERVE IN (5E) ...................................................................................... 3-49
3.1.18.1 PERSISTENT RESERVE IN service actions............................................................... 3-50
3.1.18.1.1 READ KEYS...........................................................................................................3-50
3.1.18.1.2 READ RESERVATIONS ....................................................................................... 3-51
3.1.18.2 PERSISTENT RESERVE IN parameter data for READ KEYS.................................... 3-51
3.1.18.3 PERSISTENT RESERVE IN parameter data for READ RESERVATIONS ................ 3-52
3.1.18.3.1 Persistent reservation scope..................................................................................... 3-53
3.1.18.3.2 Persistent reservations type ..................................................................................... 3-54