Installation manual

SCSI Sense Keys
KEY DESCRIPTION
0 NO SENSE
There is no specific sense key information to be reported for the designated logical unit. This
would be the case for a successful command or a command that received CHECK
CONDITION or COMMAND TERMINATED status because one of the filemark, EOM, or
ILI bits is set to one.
1 RECOVERED DATA
The last command completed successfully with some recovery action performed by the target.
Details may be determined by examining the additional sense bytes and the information field.
2 NOT READY
The logical unit addressed cannot be accessed. Operator intervention may be required to
correct this condition.
3 MEDIUM ERROR
The command terminated with a non-recovered error condition that was probably caused by a
flaw in the medium or an error in the recorded data. This sense key may also be returned if the
target is unable to distinguish between a flaw in the medium and a specific hardware failure
(sense key 4).
4 HARDWARE ERROR
The target detected a non-recoverable hardware failure while performing the command or
during self test.
5 ILLEGAL REQUEST
There was an illegal parameter in the command descriptor block or in the additional
parameters supplied as data for some commands. If the target detects an invalid parameter in
the command descriptor block, then it shall terminate the command without altering the
medium. If the target detects an invalid parameter in the additional parameters supplied as
data, then the target may have already altered the medium. This sense key may also indicate
that an invalid IDENTIFY message was received.
6 UNIT ATTENTION
The removable medium may have been changed or the target has been reset.
7 DATA PROTECT
A command that reads or writes the medium was attempted on a block that is protected from
this operation.
8 BLANK CHECK
A write-once device or a sequential-access device encountered blank medium or
format-defined end-of-data indication while reading or a write-once device encountered.
9 Vendor Specific
This key is available for reporting vendor specific conditions.
a COPY ABORTED
A COPY, COMPARE, or COPY AND VERIFY command was aborted due to an error
condition on the source device, the destination device, or both.
b ABORTED COMMAND
The target aborted the command. The initiator may be able to recover by trying the command
again.
Sun4/II: Trouble - Disk - SCSI Sense Keys
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