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SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-237

4.32 SET DEVICE IDENTIFIER Command (A4h)

The SET DEVICE IDENTIFIER command requests that the device identifier information in the SDLT

tape drive be set to the value contained in the parameter list. This information is then accessible using

the REPORT DEVICE IDENTIFIER command. The device identifier is persistent through Reset and

power cycles.

On successful completion of a SET DEVICE IDENTIFIER command, the drive generates a UNIT

ATTENTION status for all initiators except the one that issued the command. When the drive reports

the UNIT ATTENTION status, the Additional Sense Code is set to DEVICE IDENTIFIER

CHANGED.

Figure 4-127. SET DEVICE IDENTIFIER Command Descriptor Block — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 Operation Code (A4h)

1 Reserved Service Action (06h)

2 – 5 Reserved

6 – 9

(MSB)

Parameter List Length

(LSB)

10 Reserved

11 Control

SDLT 600

SCSI Interface Guide

SCSI Commands

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REV A01

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Quantum 1200 Series DAT Autochanger Podręcznik Użytkownika Strona 279