Quantum 10K II - Manual (Page 242)

SCSI Description
Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives 5–175
REQUEST SENSE Command (03h) (continued)
Table 5–83 Sense Data Fields (Error Code 70h) — Field Descriptions (continued)
Field Definition
Field Replaceable Unit The Field Replaceable Unit Code specifies a unit that has failed:
Code
FRU
1 Host
2 Hard Disk Assembly (HDA)
3 Printed Circuit Board Assmbly (PCBA)
SKSV Sense-Key Specific Valid bit. This bit is 1 for all sense keys listed in Table
5–84 (exception: NOT READY and UNIT ATTENTION/RPL Status Change).
The SKSV bit and Sense-Key Specific bytes may be 0 when the sense key
is NOT READY.
Sense-Key Specific The contents of the Sense-Key Specific field are unique to each sense
key. Table 5–85 summarizes the sense keys for which the drive supplies
sense-key specific information. (See SKSV.)
Table 5–84 Supported Sense Keys
Sense Key Code Description
NO SENSE 0h There is no specific sense key information to be reported for
the designated logical unit. This is the case for a successful
command or a command that received CHECK CONDITION or
COMMAND TERMINATED status because one of the
following bits is set to 1: File Mark, EOM, or ILI.
RECOVERED ERROR 1h The last command completed successfully with some
recovery action performed by the drive. Details may be
contained in the additional sense bytes and the Information
field. When multiple recovered errors occur during one
command, the choice of which error to report (first, last,
most severe, etc.) is device specific.
NOT READY 2h The logical unit cannot be accessed. Operator intervention
may be required to correct this condition.
MEDIUM ERROR 3h 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 can also be
returned if the drive is unable to distinguish between a flaw
in the medium and a specific hardware failure (Sense Key
4h).
HARDWARE ERROR 4h The drive detected a non-recoverable hardware failure while
performing the command or during a self-test. The error type
could be controller failure, device failure, etc.
(continued)