Maxtor ATLAS 10K III Manual download pdf (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.

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Maxtor ATLAS 10K III Manual Page 242