Compaq HSZ80 manual 72CLI Commands

5–72CLI Commands

Specify POLICY=BEST_PERFORMANCE to choose a replacement disk drive from the spareset with the best performance. The controller attempts to select a disk on a different port than existing mirrorset members. If there is more than one disk drive in the spareset matching the best performance criteria, the controller selects a disk drive that equals or exceeds the base member size. This switch is not valid if DT_SUPPORT is enabled.

Specify NOPOLICY to prevent the controller from automatically replacing a failed disk device. This causes the mirrorset to operate in a reduced state until either POLICY=BEST_PERFORMANCE or POLICY=BEST_FIT is selected, or a member is manually placed in the mirrorset (see “SET mirrorset-name,” page 5–112).

Example

This example shows how to create a one-member mirrorset from each member of a stripeset. These commands set the nominal number of members in each mirrorset to two and add a second disk to each mirrorset. It is not necessary to initialize the mirrorsets or add them as units; the higher-level structure of the stripeset is carried down to the mirrorsets.

ADD DISK DISK10100 1 1 0

ADD DISK DISK20100 2 1 0

ADD DISK DISK30100 3 1 0

ADD STRIPESET STRIPE1 DISK10100 DISK20100 DISK30100

INITIALIZE STRIPE1

ADD UNIT D102 STRIPE1

MIRROR DISK10100 MIRROR1

SET MIRROR1 MEMBERSHIP=2

SET MIRROR1 REPLACE=DISK20200

MIRROR DISK20100 MIRROR2

SET MIRROR2 MEMBERSHIP=2

SET MIRROR2 REPLACE=DISK30200

MIRROR DISK30100 MIRROR3

SET MIRROR3 MEMBERSHIP=2

SET MIRROR3 REPLACE=DISK10200