Chapter 9: Managing Logical Drives and Hot Spares ● 904 When prompted, click Yes to delete the device, or No to cancel thedeletion.If you click Yes, the logical device is deleted. The disk drives or drivesegments included in the logical device become available, and can beused to create a new logical drive (see page 77), or to expand anexisting logical drive (see page 84).Working with Hot SparesA hot spare is a disk drive that automatically replaces any failed drive ina logical drive, and can subsequently be used to rebuild that logicaldrive. (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, simplevolumes, or spanned volumes.● You can’t create a hot spare from a disk drive that is already part of alogical drive.● You should select a disk drive that is at least as big as the largest diskdrive it might replace.Dedicated Spare or Global Spare?A global hot spare is not assigned to a specific logical drive and willprotect any logical drive on the controller (except RAID 0 logicaldrives). You can designate a global hot spare before or after you buildlogical drives on a controller; you can also designate a global hot sparewhile you’re creating a logical drive. To designate a global hot spare, seepage 91.A dedicated hot spare is assigned to one or more specific logical drivesand will only protect those logical drives. You must create the logicaldrive before you can assign a dedicated hot spare. To assign a dedicatedhot spare, see page 92.
