Quantum 1200 Series DAT Autochanger Guide de l'utilisateur télécharger pdf (Page 160)

MODE SENSE (6) / (10) Command (1Ah / 5Ah) SDLT 600 SCSI Interface Guide

4-118 January 2005 81-81200-02 REV A01

Control Mode Page (0Ah)

The Control Mode Page allows the initiator to determine whether the drive returns a CHECK

CONDITION status when one of the WRITE and READ counters has reached a specified threshold.

Figure 4-66. Control Mode MODE SENSE Page — Data Format

Bit

Byte

7 6 5 4 3 2 1 0

0 PS (0) SPF (0) Page Code (0Ah)

1 Page Length (0Ah)

2 TST Reserved D_Sense GLTSD RLEC

3 Queue Algorithm Modifier (0) Rsv’d QErr (0) DQue (0)

4 TAS RAC UA_Intlck_Ctrl SWP Obsolete

5 Reserved Autoload Mode

6 – 7 Obsolete

8 – 9

(MSB)

Busy Timeout Period

(LSB)

10 – 11

(MSB)

Extended Self-test Completion Time

(LSB)

Table 4-67. Control Mode MODE SENSE Page — Field Descriptions

Field Name Description

PS Parameters Savable. Not supported. Always set to 0.

SPF SubPage Format. Always set to 0. Indicates that the drive uses the page_0 page format.

Page Code Identifies the type of MODE SENSE page being transferred. A value of 0Ah identifies

this as the Control Mode page.

Page Length Indicates the number of bytes in the Control Mode Page being transferred. The value for

this byte is 0Ah.

TST Task Set Type. Always set to 0. The drive maintains a single task set for all initiators.

D_Sense Descriptor Format Sense Data. Always set to 0. The drive always returns fixed-format

autosense data.

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Quantum 1200 Series DAT Autochanger Guide de l'utilisateur Page 160