HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Command Line Interface Reference Guide (EK-G80CL-RA. C01, March 2005)

CLI Command Descriptions

69HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software

Command Line Interface Reference Guide

■ Specify NOPOLICY to prevent the controller from automatically replacing a

failed disk device. The mirrorset operates in a Reduced state until a

POLICY=BEST_FIT or POLICY=BEST_PERFORMANCE is selected or a

member is manually placed in the mirrorset (see SET mirrorset-name

on page 216).

READ_SOURCE=LEAST_BUSY

(default)

READ_SOURCE=ROUND_ROBIN

Selects the mirrorset member used by the controller to satisfy a read request.

■ Specify READ_SOURCE=LEAST_BUSY to direct read requests to the

mirrorset disk with the least amount of work in its queue. If multiple disks

have equally short queues, the controller queries normal disks for each

read request as it would if READ_SOURCE=ROUND_ROBIN is specified.

■ Specify READ_SOURCE=ROUND_ROBIN to sequentially direct read

requests to each local mirrorset disk. The controller equally queries all

normal disks for each read request.

Examples

To create a mirrorset named MIRR1 consisting of disks DISK10000, DISK20100,

and DISK30200, enter:

ADD MIRRORSETS MIRR1 DISK10000 DISK20100 DISK30200

To create a host-addressable unit after the mirrorset MIRR1 was created, enter:

INITIALIZE MIRR1

ADD UNITS D104 MIRR1