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HSG80 Array Controller V8.7 Command Line Interface Reference Guide
2–21
ADD RAIDSETS
Switches
The following switches are available with the ADD RAIDSETS command:
•
POLICY and NOPOLICY
•
RECONSTRUCT
•
REDUCED and NOREDUCED
These switches are described in the following paragraphs:
POLICY=BEST_FIT
POLICY=BEST_PERFORMANCE (default)
NOPOLICY
Sets the selection criteria the controller uses to choose a replacement member
from the spareset when a RAIDset member fails:
•
Specify POLICY=BEST_FIT to choose a replacement disk drive from the
spareset that equals or exceeds the base member size of the remaining
members of the RAIDset. If more than one disk drive in the spareset is the
correct size, the controller selects a disk drive giving the best performance.
•
Specify POLICY=BEST_PERFORMANCE to choose a replacement disk
drive from the spareset resulting in the best performance of the RAIDset. The
controller attempts to select a disk on a different port than existing RAIDset
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 RAIDset.
•
Specify NOPOLICY to prevent the controller from automatically replacing a
failed disk device. This RAIDset operates in a reduced state until you select
either POLICY=BEST_PERFORMANCE or POLICY=BEST_FIT, or
manually place a member in the RAIDset. See SET RAIDset-name for more
information regarding this procedure.
RECONSTRUCT=FAST
RECONSTRUCT=NORMAL (default)
Sets the speed at which the controller reconstructs data to a new RAIDset disk that
replaces the failed disk:
•
Specify FAST to allow the reconstruct process to take precedence over other
controller operations. When the RECONSTRUCT=FAST switch is specified,
the controller uses more resources to perform the reconstruction.
Reconstruction takes less time, but overall controller performance is reduced
during reconstruction.