HP Array Controller HSG V8.7 Software - Manual (Page 394)

B–122 HSG80 User’s Guide
Note No other switches can be set when you specify the
MEMBERSHIP switch.
If you increase the number of members and specify a replacement
policy with the POLICY= switch, 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.
REMOVE=disk-name
Instructs the controller to remove a member from an existing mirrorset.
The disk drive specified by disk-name is removed from the mirrorset
specified by mirrorset-name. The removed disk drive is added to the
failedset.
Note No other switches can be set when the REMOVE= switch is
specified.
If the mirrorset won’t have a normal or normalizing member remaining
after you remove the disk drive, the controller reports an error and no
action is taken. A normal or normalizing member is a mirrorset
member whose contents are the same as all other normal members.
For each reduced mirrorset, there must be at least one remaining normal
member after the reduction.
Unlike the REDUCE command, the REMOVE switch does not change
the nominal number of members in the mirrorset. If the mirrorset has a
replacement policy and there are acceptable disk drives in the spareset,
the controller adds disk drives from the spareset to the mirrorset to
make the actual number of members equal to the nominal number of
members.