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Dell OpenManage Server Administrator Storage Management User's Guide
A global hot spare is an unused backup disk that is part of the disk group. Hot spares remain in standby mode. When a physical disk that is used in a virtual disk fails, the assigned hot spare is activated to replace the failed physical disk without interrupting the system or requiring your intervention. When a hot spare is activated, it rebuilds the data for all redundant virtual disks that were using the failed physical disk.
You can change the hot spare assignment by unassigning a disk and choosing another disk as needed. You can also assign more than one physical disk as a global hot spare.
Global hot spares must be assigned and unassigned manually. They are not assigned to specific virtual disks. If you want to assign a hot spare to a virtual disk (it will replace any physical disk that fails in the virtual disk) then use the "Assign and Unassign Dedicated Hot Spare".
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NOTE: When deleting virtual disks, all assigned global hot spares may be automatically unassigned when the last virtual disk associated with the controller is deleted. |
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NOTICE: The SAS 6/iR controller enables you to assign two physical disks as global hot spare. Assigning a physical disk as a global hot spare on a SAS 6/iR controller is likely to cause data loss from the physical disk. If the system or boot partition resides on the physical disks, it may be destroyed. You should only assign physical disks that do not contain critical data. For more information about global hot spares and the SAS 6/iR, see "Global Hot Spare Considerations on a SAS 6/iR". |
You should be familiar with the size requirements and other considerations associated with hot spares. See the following sections for more information:
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