Promise Technology 2-Year Extended Warranty for VessR2000 RAID Head - Manual (Page 607)

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Vess R2000 Series Product Manual Promise Technologies
s
pare
d
riVes
Spare drive technology includes:
• “Definition” (below)
• “Options” (below)
• “Requirements” on page 581
• “Transition” on page 581
D
efInItIon
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
• Configure the spares as global revertible spare drives
o
PtIonS
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)