Quantum DLT-S4 Guia do Utilizador descarregar pdf (Página 339)

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101

Chapter 4 SCSI Commands

REQUEST SENSE Command (03h)

DLT-S4 Interface Reference Guide 305

REQUEST SENSE Command (03h) 4

The REQUEST SENSE command directs the DLT-S4 tape drive to transfer

detailed Sense Data to the initiator.

Figure 158 REQUEST SENSE

Command Descriptor Block —

Data Format

Table 171 REQUEST SENSE

Command Data — Field

Descriptions

Bit

7 6 5 4 3 2 1 0

Byte

0 Operation Code (03h)

1 Reserved DESC

2 — 3 Reserved

4 Allocation Length

5 Control

Field Description

DESC Descriptor. Indicates which sense data format the

drive returns. The drive does not support

descriptor format sense data. Must be set to 0,

indicating that the drive returns fixed format sense

data.

Allocation

Length

Specifies the maximum number of Sense Data

bytes to be returned. The drive terminates the

transfer when it has transferred this number of

bytes or all available Sense Data to the host,

whichever is less.

1 2 ... 334 335 336 337 338 339 340 341 342 343 344 ... 385 386

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