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100

101

Chapter 4 SCSI Commands

REPORT DEVICE IDENTIFIER Command (A3h/05h)

DLT-S4 Interface Reference Guide 290

Table 160 REPORT DEVICE

IDENTIFIER Command

Descriptor Block — Field

Descriptions

The REPORT DEVICE IDENTIFIER parameter list contains a 4-byte field

that sets the length in bytes of the parameter list and the drive’s identifier.

Figure 147 REPORT DEVICE

IDENTIFIER — Data Format

Field Description

Service Action A service action of 05h identifies this as the

REPORT DEVICE IDENTIFIER command.

Allocation Length If the Allocation Length is not large enough to hold all of the parameter data, the

drive truncates the data it returns. This is not considered an error. The actual length

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

If the remainder of the parameter data is required, the application client must send a

new

REPORT DEVICE IDENTIFIER command with a value in the Allocation Length

field large enough to hold all of the data.

Bit

7 6 5 4 3 2 1 0

Byte

0 — 3

(MSB)

Identifier Length (n – 4)

(LSB)

4 — n Identifier

1 2 ... 319 320 321 322 323 324 325 326 327 328 329 ... 385 386

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