SCSI Description

 

 

 

 

 

 

 

The Information field contains the following device-type or command-specific informa-

 

tion:

 

Informa-

1) The unsigned logical sector address associated with the sense key.

2) The difference between the requested length and the actual length in either bytes or

tion

 

sectors, as determined by the command. This difference is called the residue.

 

3) A description of each of the drive's supported commands definition for this field is

 

contained in Table 5-177.

 

 

 

Additional

The Additional Sense Length field indicates the number of addition sense bytes that can

follow. If the Allocation Block Length specified in the Command Descriptor Block is too

Sense

small to transfer all of the additional sense bytes, the Additional Sense Length byte value

Length

is not adjusted to reflect the truncation.

 

 

 

 

 

 

Command-

The Command-Specific Information field is valid only for Sense Data for a failed REAS-

Specific

SIGN BLOCKS command. It contains either the Logical Block Address of the first defect

Informa-

descriptor not reassigned or, if all the defect descriptors were reassigned, FFFFFFFFh.

tion

 

 

 

 

Additional

The Additional Sense Code field indicates further information related to the error or ex-

ception condition reported in the sense key. If the drive does not have further related

Sense

information, the additional sense key is set to NO ADDITIONAL SENSE INFORMATION.

Code

See Table 5-178.

 

 

 

 

 

 

Additional

The Additional Sense Code Qualifier field&GHKPKVKQPindicates detailed information related to the ad-

Sense(KGNF

CodeQual-

ditional sense code. If the drive does not have detailed information, the field is set to 0.

ifier

 

 

 

 

 

Field Re-

 

 

placeable

The Field Replaceable Unit Code specifies a unit that has failed:

Unit

 

 

 

 

 

 

Code

FRU

 

 

 

 

1

Host

 

 

 

 

2

Hard Disk Assembly (HDA)

 

 

 

 

3

Printed Circuit Board Assembly (PCBA)

 

 

 

 

Sense-Key Specific Valid bit. This bit is 1 for all sense keys listed in Table 5-176(excep-

SKSV

tion: 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

The contents of the Sense-Key Specific field are unique to each sense key. Table 5-177

summarizes the sense keys for which the drive supplies sense-key specific information.

Specific

(See SKSV.)

 

 

 

 

 

 

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