User Manual

580
Vess R2000 Series Product Manual Promise Technologies
spare driVes
Spare drive technology includes:
• “Denition”(below)
• “Options”(below)
• “Requirements”onpage581
• “Transition”onpage581
DefInItIon
A spare drive is a physical drive that you designate to automatically replace the failed physical drive in a disk
array. See “Creating a Spare Drive Manually” on page 214.
The general recommendation is to:
•
Provideatleastonesparedriveforevery16physicaldrivesintheRAIDsystem
• Congurethesparesasglobalrevertiblesparedrives
oPtIonS
There are several options you can specify for a spare drive:
• SystemOptions
• Revertible–Returnstoitssparedriveassignmentafteryoureplacethefailedphysicaldriveinthedisk
arrayandruntheTransitionfunction.
• MediaPatrol–Bydefault,MediaPatrolrunsonsparedrivesunlessyoudisableit.
• SpareType
• Global–Canbeusedbyanydiskarray
• Dedicated–Canbeusedonlybytheassigneddiskarray
• MediaType(typeofphysicaldrive)
• HardDiskDrive(HDD)
• SolidStateDrive(SSD)