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5–114 CLI Commands
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.
NOTE: An error is displayed if you attempt to remove the only remote or local
normal member from the mirrorset if ERROR_MODE= FAILSAFE is enabled on the
unit.
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.
NOTE: Normalizing members exist only when you first create a mirrorset or when
you clear lost data on a mirrored unit. The controller recognizes the member as
normal, and all other original mirrorset members as “normalizing.” New data that
is written to the mirrorset is written to all members. The controller copies the data
existing before the mirrorset was created on the normal member to the normalizing
members. The controller recognizes the normalizing members as normal when the
mirrorset member’s blocks are all the same.
REPLACE=disk-name
Instructs the controller to add a disk member to an existing mirrorset if the following
conditions are met: