Key Code Qualifier: Difference between revisions

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add ASC/ASCQ terminology
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Key Code Qualifier is a computer term used to describe an error-code returned by a [[SCSI]] device.
 
When a SCSI [[SCSI target|target]] device returns a [[SCSI check condition|check condition]] in response to a command, the initiator usually then issue a [[SCSI Request Sense Command|SCSI Request Sense command]]. This process is part of a SCSI protocol called [[SCSI contingent allegiance condition|Contingent Allegiance Condition]]. The target will respond withto the standardRequest Sense command with a set of SCSI sense data which includes three fields:
*Sense key - 4 bits
*Additional sense code (ASC) - 8 bits