Maxtor 10K III manual 168, 167, Report Device Identifier Parameter List-Data Format, 166

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SCSI Description

REPORT DEVICE IDENTIFIER Command Descriptor Block-Field Descriptions

Table5

 

 

 

 

 

 

-166

 

(LSB)

 

 

Service(KGNFAction

/WUV￿￿￿￿￿J. Any other value&GUETKRVKQPforces Check Condition, Illegal

 

 

 

Request.

 

 

 

If the length is not sufficient to contain all of the parameter da-

 

 

 

ta, the first portion of the data is returned, and this is not con-

 

 

 

sidered to be an error. The actual length of the parameter data

 

 

Allocation Length

is available in the Identifier Length field in the parameter data.

 

 

 

If the remainder of the parameter data is required, the applica-

 

 

 

tion client must send a new REPORT DEVICE IDENTIFIER com-

 

 

 

mand with an Allocation Length field large enough to contain

 

 

 

all of the data.

The REPORT DEVICE IDENTIFIER command’s parameter list contains a 4-byte field that provides the length, in bytes, of the parameter list and the logical unit’s identifier. The data format and field descriptions are shown in Table 5-167and Table 5-168respectively.

.REPORT DEVICE IDENTIFIER Parameter List-Data Format

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

$0[VG$3KV

(MSB)

 

 

￿Identifier￿Length￿(n – 4) ￿

 

 

 

 

 

￿

￿

￿

￿

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 – n

 

 

 

 

 

 

Identifier

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REPORT DEVICE IDENTIFIER Parameter List-Field Descriptions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This field specifies the length, in bytes, of the Identifier field.

 

 

 

 

 

 

 

 

If the Allocation Length field in the CDB is insufficient in size

 

 

Identifier(KGNFLength

 

 

to transfer all of the Identifier,&GUETKRVKQPthe length is not adjusted to re-

 

 

Table5-167

 

 

 

 

flect any truncation of information. The Identifier is initially set

 

 

 

 

 

 

 

 

= 0, and is changed only by a successful SET DEVICE IDEN-

 

 

 

 

 

 

 

 

TIFIER command.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The value reported in this field is a vendor-specific value and

 

 

 

 

 

 

 

 

is the last value written by a successful SET DEVICE IDENTI-

 

 

 

Identifier

 

 

FIER command. The value of the Identifier is changed only by

 

 

 

 

 

a successful SET DEVICE IDENTIFIER command. The Identifier

Table5-168

 

 

 

 

 

 

 

 

value persists through device resets, power cycles, and for-

 

 

 

 

matting of media.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5-130 Maxtor Atlas 10K III

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Maxtor 10K III manual 168, 167, Report Device Identifier Parameter List-Data Format, 166