VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Chapter 1, Understanding VERITAS Volume Manager
Hot-Relocation
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For details of how to configure sequential DRL, see “Adding DRL Logging to a Mirrored
Volume” on page 197.
Hot-Relocation
Note You may need an additional license to use this feature.
Hot-relocation is a feature that allows a system to react automatically to I/O failures on
redundant objects (mirrored or RAID-5 volumes) in VxVM and restore redundancy and
access to those objects. VxVM detects I/O failures on objects and relocates the affected
subdisks. The subdisks are relocated to disks designated as spare disks and/or free space
within the disk group. VxVM then reconstructs the objects that existed before the failure
and makes them accessible again.
When a partial disk failure occurs (that is, a failure affecting only some subdisks on a
disk), redundant data on the failed portion of the disk is relocated. Existing volumes on
the unaffected portions of the disk remain accessible. For further details, see
“Administering Hot-Relocation” on page 227.