HP Array Controller HSG V8.7 Software - Manual (Page 352)

B–80 HSG80 User’s Guide
data, and copying takes less time. However, overall controller
performance is reduced during copying.
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.
POLICY=BEST_FIT
POLICY=BEST_PERFORMANCE
NOPOLICY (Default)
Sets the selection criteria the controller uses to choose a replacement
member 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 meets the criteria, the controller selects
the disk drive that has the best performance.
Specify POLICY=BEST_PERFORMANCE to choose a replacement
disk drive from the spareset resulting in the best performance. The
controller attempts to select a disk on a different port than existing
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.
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 replaced in
the mirrorset. See “SET mirrorset-name,” page B–121.