User`s guide

SET mirrorset-container-name
NOPOLICY retries a failing device from the mirrorset without selecting a
replacement. This causes the mirrorset to run with less than the nominal
number of members until a BEST_FIT or BEST_PERFORMANCE policy is
selected, or a member is manually replaced in the mirrorset.
READ_SOURCE= read-source
The SET mirrorset-container-name READ_SOURCE=read-source command allows
you to control the read algorithm for the specified mirrorset. The following
choices are allowed for read-source:
ROUND_ROBIN—Each NORMAL mirrorset member is the target of a read in
sequential membership order. No preference is given to any NORMAL member.
This is the default read-source.
LEAST_BUSY—The NORMAL mirrorset member with the least busy work queue
is the target of the read.
device-container-name—All reads are done on device-container-name.Ifdevice-
container-name fails out of the mirrorset, the READ_SOURCE algorithm reverts
to LEAST_BUSY.
COPY= copy_speed
The SET mirrorset-container-name COPY=copy_speed command allows you to
specify the speed at which mirrorset copies are performed. You may specify either
NORMAL or FAST.
NORMAL uses relatively few controller resources to perform the copy, and has
little impact on controller performance.
FAST uses more controller resources, which reduces the time it takes to complete
the copy, but also reduces overall controller performance.
Examples
1.
CLI> SET MIRR9 POLICY=BEST_FIT
Changes mirrorset MIRR9’s policy to BEST_FIT.
2.
CLI> SET MIRR9 REMOVE=DISK0
Removes mirrorset MIRR9’s member DISK0 from the mirrorset. If there is a
replacement policy, a new disk is taken from the spareset and placed in the
mirrorset automatically.
3.
CLI> SET MIRR9 REPLACE=DISK320
Adds disk DISK320 to the reduced mirrorset, MIRR9. A reconstruct operation
begins immediately on DISK320.
B–64 Command Line Interpreter