ASC/ASCQ: Additional Sense Codes and Qualifiers. |

This report displays all aditional sense key codes along with their description and the kind of hardware/software they apply to. This information can be used to understand error messages coming from storade devices like Sun T3 and Sun 6120.
SCSI Additional Sense Data takes the form of two value encoded bytes in the sense data, typically returned by the REQUEST SENSE command. The additional sense code (ASC) byte indicates information about the error exception reported in the sense key field.
The additional sense code qualifier (ASCQ) indicates detailed information related to the additional sense code. See the clause describing the REQUEST SENSE command in the SCSI Primary Commands - 3 (SPC-3) draft standard for more information about sense data.
An ASC/ASCQ code value may be used by several SCSI device types. The letters in the DTLPWRSOMCAEBK column indicate which SCSI device types have the option of using the listed ASC/ASCQ value. When all the DTLPWRSOMCAEBK letters are present, then all SCSI device types may use the listed ASC/ASCQ value. If only one letter is present (such as with the PAPER JAM ASC/ASCQ in the example above) then only one SCSI device type may use the listed ASC/ASCQ. (In the case of the PAPER JAM example, the only SCSI device type that may use the ASC/ASCQ is the Printer Device type.)