HP storageworks HSG80 Reference Manual page 147

• Specify COPY=NORMAL when operations performed by the controller
should take priority over the copy operation. If you specify COPY=NORMAL,
creating the mirrored data has a minimal impact on performance.
MEMBERSHIP=number-of-members
Sets the nominal number of mirrorset members to the number you specify for the
number-of-members value. A maximum of six members can be specified.
NOTE: No other switches can be set when you specify the MEMBERSHIP switch.
If you increase the number of members, the controller automatically adds disk
drives from the spareset to the mirrorset until the new number of members is
reached, or there are no more suitable disk drives in the spareset.
If you increase the number of members and the NOPOLICY switch is specified,
the REPLACE=disk-name switch must be specified to bring the mirrorset up to the
new nominal number of members.
You cannot set the nominal number of members lower than the actual number of
members. Specify the REMOVE switch to reduce the number of disk drives from
the mirrorset.
POLICY=BEST_FIT
POLICY=BEST_PERFORMANCE (default)
NOPOLICY
Sets the selection criteria the controller uses to choose a replacement disk from the
spareset when a mirrorset member fails.
• Specify POLICY=BEST_FIT to choose a replacement disk drive from the
spareset that equals or exceeds the base member size (smallest disk drive at
the time the mirrorset was initialized). If there is more than one disk drive in
the spareset that meet the criteria, the controller selects a disk drive with the
best performance.
• 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 of the mirrorset.
• 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.
HSG80 Array Controller V8.7 Command Line Interface Reference Guide
SET mirrorset-name
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