Hot relocation is an automatic process that relocates subdisks from a disk that has I/O errors. If there are I/O errors on a subdisk containing a redundant volume (RAID-5 or mirrored), the redundant volume's subdisks are moved from the failed subdisk to a hot spare disk. If there is not enough free space on designated hot spare disks, then free space on any available disk is used.

The Undo Hot Relocation command can be used to move the subdisks back to their original location after the failed disk has been repaired or replaced.

More information about how hot relocation works is available.

The default for Storage Foundation is to have automatic hot relocation mode inactive. This means that if an I/O error occurs in a redundant subdisk, the subdisk is not automatically relocated to another disk. Use the Set Disk Usage command to designate preferred disks as targets for hot relocation.

The option to disable the hot relocation mode is available from the Control Panel.