RAID Recovery : Steps by CBL

Common RAID failures

RAID technology combines physical hard disks into a single logical unit either by using unique hardware or software thereby offering redundancy and increasing data availability. However, RAID configurations are typically complex and when a RAID system does fail, it can threaten a large amount of critical data and put your business at extreme risk. Common RAID failures include: · Multiple disk failure · Loss of RAID configuration settings · Inadvertent reconfiguration of RAID volume · Loss of RAID disk(s) access after system or application upgrade · RAID Controller Malfunction · RAID rebuild error or volume reconstruction problem · Missing RAID Volumes · Incorrect replacement of good disk element belonging to a working raid volume

 

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• Get facts together about your RAID: -- SERVER AND RAID INFO -- What Type of RAID? RAID 0, 1, 5, 10 etc. How is it controlled? (ask for the controller and cables) -Hardware -Software ( version , file type ) # of Volumes? Capacity of the drives (how many GB for each drive) What type of drives (IDE or SCSI) Block Size used? (offset of starting block) Details - additional RAID information **Make sure the drives are labeled in the order they were plugged in

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