SCSI Command Overview
Drive Control Commands
Chapter 1
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Drive Control Commands
This section describes all specifications, except command specifications
of the target. The “SCSI Commands Used by the Target” are described
later in this chapter.
SCSI Bus Phases
The target supports the following phases specified in the SCSI standard.
Arbitration phase
When the drive tries to reconnect to an initiator to continue command
operations, it waits for the BUS FREE phase, then enters the
ARBITRATION phase.
Selection phase
The selection phase allows an initiator to select a target for the purpose
of initiating a target function such as a read or write command. During
the selection phase the I/O signal is negated so that this phase can be
distinguished from the reselection phase. The drive examines the DATA
BUS to determine the selecting initiator SCSI ID. If it cannot detect the
ID, the drive does not respond to the selection.
Reselection phase
The reselection phase allows the target to reconnect to an initiator to
continue the command started by the initiator, but suspended by the
target.
Information transfer phase
The command, data, status, and message phases are all grouped together
as the information transfer phases because they are all used to transfer
data or control information via the data bus.
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 ...