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RAID Degraded - what to do?

Posted on 2008-06-19
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Last Modified: 2008-09-21
Hi

I have just taken over this server from the previous service provider.  First thing I noticed was that the RAID 1 array, i.e. 2 x 75Gb Seagate SATA drives attached to an Adaptec CERC SATA1.5/6ch controller, is degraded.  

Can anyone help with the following questions arising from this

1.  How can I verify which drive is offline and whether or not it is re-usable, I believe it's the drive on channel 1 but the Adaptec pre-boot utility is not very easy to be certain about.
2.  If I MUST replace the drive, what should I replace it with?  I don't believe that this model drive is available, only larger drives seem to be available.  Therefore, should I replace both drives?
3.  If I should replace both drives what will be the quickest and easiest way to do so, minimising downtime and risk of data loss?

TIA

Seedubya
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Question by:Seedubya
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lnkevin earned 1500 total points
ID: 21825107
1. Get in Server Management and locate the bad drive. Normally, when you have Raid degraded, you have some bad drive.
2.  Once you find the bad drive, replace it with the new drive and let the server rebuild the RAID. You may not be able to expand your drive on CERC controller so just replace one drive with the bigger drive. It's OK to use the bigger drive it just can utilize the entire size on it.
3. You can replace both drive (one after the other complete with building), but you will never be able to use the drive and the only way to replace both drive with the bigger size is using the third party software image like: Acronis, Paragon, Symantec Recovery Console Management....
With these software, you just need to backup the image and rebuild your RAID from scratch with the bigger drives then restore the image back.

K
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