Quantum 1200 Series DAT Autochanger Guía de usuario descargar pdf (Pagina 139)

SDLT 600 SCSI Interface Guide Chapter 4: SCSI Commands

81-81200-02 REV A01 January 2005 4-97

4.9.12 Disaster Recovery Control Page (3Ch)

This page controls the operation of the Disaster Recovery Control Mode for the tape drive.

Figure 4-55. Disaster Recovery Control MODE SELECT Page — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 PS(0) Rsv’d Page Code (3Ch)

1 Page Length (4)

2 Reserved DRAct

3 – 5 Reserved

Table 4-57. Disaster Recovery Control MODE SELECT Page — Field Descriptions

Field Name Description

PS Parameters Savable. Must be set to 0.

Page Code Identifies the type of MODE SELECT page being transferred. A value of 3Ch

identifies this as the Disaster Recovery Control Page.

Page Length Indicates the number bytes in the page, excluding bytes 0 and 1. The length is

returned in MODE SENSE commands and must subsequently be set to the

same value when performing MODE SELECT. If the drive receives an

unexpected page length value, it returns a CHECK CONDITION status with

Sense Key set to ILLEGAL REQUEST.

DRAct Disaster Recovery Active. Set to 0 to disable Disaster Recovery mode. Set to

1 to enable Disaster Recovery mode.

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Quantum 1200 Series DAT Autochanger Guía de usuario Pagina 139