SCSI Command Overview
Drive Control Commands
Chapter 1
1-4
Data phase
The data phase encompasses both the “data in” phase and the “data out”
phase to transfer data to and from the drive. Synchronous and
asynchronous data transfers are supported.
The data in phase allows the target to request that data be sent to the
initiator from the target.
The data out phase allows the target to request that data be sent from
the initiator to the target.
Command phase
The command phase sends the Command Descriptor Block (CDB) from
the initiator to the drive.
Message phase
The message phase refers to a message in or a message out phase.
Multiple messages may be sent during either phase. The first byte
transferred in either of these phases is either a single-byte message or
the first byte of a multiple-byte message. Multiple-byte messages are
wholly contained within a single message phase.
Message In
phase allows the target to request that messages be sent to
the initiator from the target.
Message Out
phase allows the target to request that messages be sent
from the initiator to the target. The target invokes this phase in response
to the attention condition created by the initiator.
See Table 1-1 on page 1-5 for a list of supported messages.
Summary of Contents for SureStore Optical 2600fx
Page 1: ...optical drive and library SCSI 2 command reference for models fx ex and mx ...
Page 11: ...Contents x ...
Page 20: ...Chapter 1 1 1 SCSI Command Overview 1 SCSI Command Overview ...
Page 38: ...Chapter 2 2 1 Drive Commands SCSI 2 Drive Commands 2 SCSI 2 Drive Command Set ...
Page 187: ...SCSI 2 Drive Command Set Write Long Command DFH Chapter 2 2 150 ...
Page 188: ...Chapter 3 3 1 Jukebox SCSI 2 Commands 3 Jukebox SCSI 2 Command Set ...
Page 264: ...Appendix A A 1 Drive Error Codes A Drive Error Codes ...
Page 287: ...Drive Error Codes DSP Error Codes Appendix A A 24 ...
Page 288: ...Appendix B B 1 Autochanger Error Codes B Autochanger Error Codes ...
Page 339: ...Autochanger Error Codes Jukebox Micro Move Error Codes Appendix B B 52 ...
Page 340: ...Appendix C C 1 Field Replaceable Units C Field Replaceable Units FRUs ...
Page 345: ...Field Replaceable Units FRUs HP Field Replaceable Units FRUs Appendix C C 6 ...
Page 346: ...Appendix D D 1 Micro Macro Moves D Micro Macro Moves ...
Page 369: ...Micro Macro Moves HP Surestore Optical Micro Move IDs Appendix D D 24 ...
Page 370: ...Appendix E E 1 Disconnect Timeouts E Disconnect Timeout Settings ...
Page 373: ...Disconnect Timeout Settings Disconnect Timeout Settings Appendix E E 4 ...
Page 377: ...Index 4 ...