HP storageworks HSG80 Reference Manual page 155

If more than one disk drive in the spareset matches the best performance
criteria, the controller selects the smallest disk drive that equals or exceeds the
base member size of the RAIDset.
• Specify NOPOLICY to prevent the controller from automatically replacing a
failed disk device. This causes the RAIDset to operate in a reduced state until
either POLICY=BEST_PERFORMANCE or POLICY=BEST_FIT is selected,
or a member is manually replaced in the mirrorset.
RECONSTRUCT=FAST
RECONSTRUCT=NORMAL (default)
Sets the speed at which the controller reconstructs the data on the new RAIDset
member replacing a failed member.
• Specify RECONSTRUCT=NORMAL to balance other controller operations
against the reconstruct operation. The controller uses relatively few resources
to perform the reconstruct, and there is little impact on performance.
• Specify RECONSTRUCT=FAST when the reconstruct operation must take
precedence over other controller operations. The controller uses more
resources to perform the reconstruction. Reconstruction takes less time, but
overall controller performance is reduced during the reconstruction.
REMOVE=disk-name
Instructs the controller to remove a member from an existing RAIDset. The disk
drive specified by disk-name is removed from the RAIDset specified by
RAIDset-name. The removed disk drive is added to the failedset.
If a RAIDset is already in a reduced state, an error is displayed and the command
is rejected. If a replacement policy is specified, the replacement is taken from the
spareset to replace the removed member using the policy specified.
If the NOPOLICY switch is specified with the SET RAIDset-name command, the
RAIDset continues to operate in a reduced state until a replacement policy is
specified or the REPLACE switch is specified. See the REPLACE=disk-name
switch for information on manually replacing a RAIDset member. See the
POLICY and NOPOLICY switches for information regarding setting a policy for
automatic member replacement.
NOTE: Do not specify other switches when you use the REMOVE switch.
REPLACE=disk-name
Instructs the controller to add a disk member to an existing RAIDset if the
following conditions are met:
HSG80 Array Controller V8.7 Command Line Interface Reference Guide
SET RAIDset-name
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