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While Rebuilding a RAID 5 array, one of the other drives in the array failed and the array iss now showing as Raid Inoperable. the 2nd drive that failed is now showing in the available drives list as working, but is no longer part of the raid. which means the raid is still unavailable. is there a way to re add this drive so i can finsih the re-build.

its a RAID 5 with 8 Drives on a 3ware 9650SE

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migrated from serverfault.com Dec 3 '10 at 19:29

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I'm not sure I'd trust it to complete the rebuild. Either the controller has an issue or the drive has something bad.

I'd get two new drives and restore from backup, personally.

Even if you could pull data on it, unless there's damage that can repaired it may be in a format just for the card to read from for that array. You'd get crud from the drive outside its array structure.

If your manufacturer doesn't have any utilities meant to repair a situation like this, they'll most likely tell you to reformat the volume and restore from backup.

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unfortunately i dont have a backup. the logical drive was unmounted at the time of the rebuild. so im hopeing there wasnt any writes to the array. in the raid error log its showing: Primary DCB read error occurred: port=6, error=0x202. which is the drive thats now showing in the available list – Justin Hawkes Dec 3 '10 at 17:00
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No backup? why not? I'd be very surprised if this data is recoverable at all. – Chopper3 Dec 3 '10 at 17:07
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Whatever the value of your lost data, think of it as a sunk cost in learning to take backups. – Chris S Dec 3 '10 at 18:06
@Chopper3 & Chris S: i dont have a backup because its my home Box and there isnt a cheap way to backup 6+ TB that i know of. Is there no way to even try to repair the array? the data isnt that valueable, its just stuff ive collected over the years and id prefer not to lose it. – Justin Hawkes Dec 3 '10 at 18:21
Probably not but given this is just home use stuff it should be on our sister site superuser.com (have a quick read of the FAQ some time please). – Chopper3 Dec 3 '10 at 19:29
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