Promise Technology 2-Year Extended Warranty for VessR2000 RAID Head - Manual (Page 662)

635
Product Manual Troubleshooting
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ebuilding A
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isk
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When you rebuild a disk array, you are actually rebuilding the data on one physical drive.
• When a physical drive in a disk array fails and a spare drive of adequate capacity is available, the disk
array begins to rebuild automatically using the spare drive.
• If there is no spare drive of adequate capacity, but the Auto Rebuild function is ENABLED, the disk array
begins to rebuild automatically as soon as you remove the failed physical drive and install an unconfigured
physical drive in the same slot. See “Making Rebuild Settings” on page 152.
• If there is no spare drive of adequate capacity and the Auto Rebuild function is DISABLED , you must
replace the failed drive with an unconfigured physical drive, then perform a Manual Rebuild. See
“Rebuilding a Disk Array” on page 195.
i
ncOMPlete
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A more serious, but far less common problem is an Incomplete Array. An in-complete array results from a
physical drive that fails or becomes missing during:
• RAID level migration
• Disk array transport
Migration
Normally, if a physical drive or the controller fails during migration, the disk array goes critical, and you can
rebuild it.
Transport
Transport is the action of moving the physical drives of a disk array:
• To different slots in the same enclosure
• From one enclosure to another
Important
If your replacement disk drive was formerly part of a different disk array or
logical drive, you must clear the configuration data on the replacement drive
before you use it. See “Clearing a Stale or a PFA Condition” on page 186..