Compaq HSZ80 manual 114CLI Commands, REMOVE=disk-name, REPLACE=disk-name

5–114CLI Commands

REMOVE=disk-name

Instructs the controller to remove a member from an existing mirrorset. The disk drive specified by disk-nameis 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: