Key Code Qualifier: Difference between revisions

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Adding short description: "Type of SCSI error code"
Removing link(s) to "SCSI check condition": Removing links to deleted page SCSI check condition.
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'''Key Code Qualifier''' is 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 [[SCSI command|command]], the [[SCSI initiator|initiator]] usually then issues 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 to the Request Sense command with a set of [[SCSI Request Sense Command|SCSI sense data]] which includes three fields giving increasing levels of detail about the error:
*K - sense key - 4 bits, (byte 2 of Fixed sense data format)
*C - additional sense code (ASC) - 8 bits, (byte 12 of Fixed sense data format)