SCSI Command Overview
Drive Control Commands
Chapter 1
1-17
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Unit Attention Condition
A unit attention condition for a logical unit begins for each initiator for
any of the following conditions:
• Poweron or Reset
• Disk Loaded
• Micro Code Change
• Inquiry Data Change
• Mode Select Data Change
The unit attention condition persists for each initiator until that initiator
issues a command to the logical unit other than Request Sense or Inquiry
for which the target reports a CHECK CONDITION status. If the next
command from that initiator to the logical unit (following the CHECK
CONDITION status) is Request Sense, the Unit Attention sense key is
returned. (If any command other than Request Sense is received, the
unit attention condition is lost.)
If an Inquiry Command is received from an initiator with a pending unit
attention condition (before the target reports CHECK CONDITION
status), the target performs the Inquiry Command and does not clear the
unit attention.
If a Request Sense Command is received from an initiator with a pending
unit attention condition (before the target reports a CHECK
CONDITION status), the target discards any pending sense data,
reports a Unit Attention sense key, and clears the unit attention
condition for that initiator.
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 ...