Veritas Volume Manager 5.1 SP1 Administrator"s Guide (5900-1506, April 2011)

Hot-relocation tries to move all subdisks from a failing drive to the same
destination disk, if possible.
When hot-relocation takes place, the failed subdisk is removed from the
configuration database, and VxVM ensures that the disk space used by the failed
subdisk is not recycled as free space.
Configuring a system for hot-relocation
By designating spare disks and making free space on disks available for use by
hot relocation, you can control how disk space is used for relocating subdisks in
the event of a disk failure. If the combined free space and space on spare disks is
not sufficient or does not meet the redundancy constraints, the subdisks are not
relocated.
Find out which disks are spares or are excluded from hot-relocation.
See “Displaying spare disk information” on page 412.
You can prepare for hot-relocation by designating one or more disks per disk
group as hot-relocation spares.
See “Marking a disk as a hot-relocation spare” on page 413.
If required, you can remove a disk from use as a hot-relocation spare
See “Removing a disk from use as a hot-relocation spare” on page 414.
If no spares are available at the time of a failure or if there is not enough space
on the spares, free space on disks in the same disk group as where the failure
occurred is automatically used, unless it has been excluded from hot-relocation
use.
See “Excluding a disk from hot-relocation use” on page 415.
See “Making a disk available for hot-relocation use” on page 416.
Depending on the locations of the relocated subdisks, you can choose to move
them elsewhere after hot-relocation occurs.
See “Configuring hot-relocation to use only spare disks” on page 416.
After a successful relocation, remove and replace the failed disk.
See “Removing and replacing disks” on page 130.
Displaying spare disk information
Use the following command to display information about spare disks that are
available for relocation:
Administering hot-relocation
Configuring a system for hot-relocation
412