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Appendix B
Global Hot Spares
A global hot spare is a backup physical disk that can be used by any redundant
virtual disk. It is not assigned (dedicated) to any specific virtual disk.
Virtual disks can typically be rebuilt by using a global spare disk, as long as the
global hot spare is not already part of the virtual disk and has enough available
capacity. Unlike a dedicated hot spare, a global hot spare can be assigned at
anytime, even while tasks are running on virtual disks.
If there is enough space available on the global hot spare, and a disk failure
occurs, the rebuild process for the virtual disk starts automatically.
A5_bk0.book Page 88 Thursday, February 10, 2011 8:34 PM