Chapter 9: Managing Logical Drives and Hot Spares ● 90
4 When prompted, click Yes to delete the device, or No to cancel the
deletion.
If you click Yes , the logical device is deleted. The disk drives or drive
segments included in the logical device become available, and can be
used to create a new logical drive (see page 77), or to expand an
existing logical drive (see page 84).
Working with Hot Spares
A hot spare is a disk drive that automatically replaces any failed drive in
a logical drive, and can subsequently be used to rebuild that logical
drive. (For more information on recovering from a disk drive failure,
see page 147.)
Hot Spare Limitations
● You can’t create a hot spare for RAID 0 logical drives, simple
volumes, or spanned volumes.
● You can’t create a hot spare from a disk drive that is already part of a
logical drive.
● You should select a disk drive that is at least as big as the largest disk
drive it might replace.
Dedicated Spare or Global Spare?
A global hot spare is not assigned to a specific logical drive and will
protect any logical drive on the controller (except RAID 0 logical
drives). You can designate a global hot spare before or after you build
logical drives on a controller; you can also designate a global hot spare
while you’re creating a logical drive. To designate a global hot spare, see
page 91.
A dedicated hot spare is assigned to one or more specific logical drives
and will only protect those logical drives. You must create the logical
drive before you can assign a dedicated hot spare. To assign a dedicated
hot spare, see page 92.
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