VERITAS Volume Manager 4.1 Administrator's Guide

Administering Hot-Relocation
Configuring a System for Hot-Relocation
Chapter 9334
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.
• To find out which disks are spares or are excluded from
hot-relocation, see “Displaying Spare Disk Information” on page 335.
You can prepare for hot-relocation by designating one or more disks per
disk group as hot-relocation spares.
• To designate a disk as being a hot-relocation spare for a disk group,
see “Marking a Disk as a Hot-Relocation Spare” on page 336.
• To remove a disk from use as a hot-relocation spare, see “Removing a
Disk from Use as a Hot-Relocation Spare” on page 338.
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.
• To exclude a disk from hot-relocation use, see “Excluding a Disk from
Hot-Relocation Use” on page 339.
• To make a disk available for hot-relocation use, see “Making a Disk
Available for Hot-Relocation Use” on page 340.
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 342).
After a successful relocation, remove and replace the failed disk as
described in “Removing and Replacing Disks” on page 97).