Date: Nov 16, 1990                            X3T9.2/90-184 Rev 0


    To: X3T9.2 Committee (SCSI)

    From: George Penokie (IBM)

    Subject: New Additional Sense Code/Qualifiers


    Proposal:

    We are requesting nine ASCQs be added to the SCSI-3 standard.  These
    ASCQs allow reporting of conditions in which the a Target is not
    currently able to report.

    Byte
    12 13 DTLPWRSOMC Description

    0C 03 D   W  O   Write Error, Recommend Reassignment
    14 05 DT  W  O   Record Not Found, Recommend Reassignment
    16 04 D   W  O   Data Sync Error, Recommend Reassignment

    If PER=1 the above three codes (0C 03, 14 05, 16 04) would be issued
    when the Target has determined a sector should be reallocated.

    Byte
    12 13 DTLPWRSOMC Description

    16 01 D   W  O   Data Sync Error, Data Rewritten
    17 09 D   W  O   Recovered Data Without ECC, Data Rewritten
    18 07 D   W  O   Recovered Data With ECC, Data Rewritten

    If PER=1 and the data was rewritten by the Target one of the above
    three codes (16 01, 17 09, 18 07) would be issued.

    Byte
    12 13 DTLPWRSOMC Description

    14 06 DT  W  O   Record Not Found, Data Auto-Reallocated
    16 03 D   W  O   Data Sync Error, Data Auto-Reallocated

    If PER=1 and the data was auto-reallocated by the Target one of the
    above two codes (14 06, 16 03) would be issued.

    Byte
    12 13 DTLPWRSOMC Description

    16 02 D   W  O   Data Sync Error, Recommend Rewrite

    If PER=1 the above code (16 02) would be reported when the Target
    has determined that rewritten the data will permanently remove the
    error condition.