Having problems with your IBM eServer xSeries 225 ?

Data recovery how to recover data from 3disk RAID5, with disk0 and disk1 DEFUNCT on an IBM eServer xSeries 225 Model 8647-5BX


Answers :

Unfortunately, a three disk RAID 5 can only tolerate a single drive failure. Is it possible that disk 0 and disk 1 were reversed? If so, then you might be dealing with only one failed drive and might be able to rebuild the RAID if you get disks back where they belong.
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\015\012Otherwise, you will need to send the disks off to a data recovery service and hope for the best. This is only viable if the data is very valuable as this will be very expensive. Typically more than $1000 just to evaluate and diagnose.
A RAID 5 array can only tolerate a single disk failure; if any more than one disks fail then all the data is lost. Not intending to be sarcastic, but you will need to fix the problem with the failed disk(s), start your raid array from scratch and do a restore from tape or whatever else you may have made a backup onto. In the future I would suggest using a hot spare, installed and configured or actually going with a raid 10 configuration.
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