Quantum 10K II User Manual

Page 127

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SCSI Description

5–60

Quantum Atlas 10K II Ultra160/m SCSI Hard Disk Drives

MODE SELECT (6) Command (15h) (continued)

5.14.1 Initiator-Changeable Mode Pages

Table 5-26 lists the mode pages that are supported by the drive. An initiator can
change these pages by supplying them, with the desired changes included, in the
MODE SELECT command’s data-out buffer transfer.
The initiator should first use a MODE SENSE command to read the appropriate
pages and leave non-changeable values as read when the initiator subsequently
writes the changeable pages with the MODE SELECT command. If a non-
changeable field contains an invalid value, the drive returns a CHECK
CONDITION status.

Table 5–26 Initiator-Changeable Mode Pages

Page Code

Page Name

Function

Size In Bytes

00h

Unit Attention Control Page

Unit Attention reporting

4

(enables or disables)

01h

Read-Write Error Recovery

Medium Access Error recovery

12

Page

and reporting procedures for
READ and WRITE commands

02h

Disconnect-Reconnect Page Bus behavior during data transfers

16

07h

1

Verify Error Recovery Page

Medium Access Error recovery

12

and reporting procedures for the
VERIFY command

08h

1

Caching Page

Cache policy

20

0Ah

1

Control Mode Page

Command processing policy

12

0Ch

Notch and Partition Page

2

Drive geometry reporting

24

10h

XOR Control Page

Controls XOR operating parameters

24

1Ah

Power Condition Page

Enable and set time intervals for Idle

12

and Standby modes

1Ch

1

Information Exceptions

Defines methods to control reporting

12

Control Page

and operations of specific informational
exception conditions.

39h

Quantum-Unique Page

22

NOTES:

1. This page is not supported by the SCSI-1/CCS Operating Mode.

2. The Notch and Partition page is changeable but NOT savable.

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