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RAID5 Drive Gone Bad..Problems !!

We had a RAID 5 drive that was going bad. We had been waiting for some time for the new drive to come in. At some point the drive was removed by the net admin to retrieve the serial number off of the drive (the drives are hot swappable so they were just pulled out). That same bad drive was placed back in the server with the power to the server still on and it mysteriously started working again.....for a a very short while. Well it has since crashed and now we cannot access our email boxes on our exchange server as I believe that drive is where the mailbox files were stored. These drives are hot swappable, but what is the impact of removing a drive in the manner that this was done and putting it back in? Will putting a new drive in at this point allow a rebuild of the array?
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David_Fong

Depends on what RAID controller you have. Without that info we can only guess but it sounds unlikely. A reboot may or may not help, some controller BIOS have diagnostics inbuilt that you can access during boot that may allow you to fix it.
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ASKER

HP DL530
We have more than 4 drives I know that.
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ASKER

Accepted Davids solution as answer as it was the closest to what was done. Thanks for all of your suggestions.
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ASKER

Got new drive and rebuilt the array. Had to restore from backup. All seems well now.
The silly thing is your net admin didn't need to remove the drive to get its serial number, if it's a standard build with SmartStart all the information, serial numbers, RAID config, firmware versions and even the machine's serial number is contained in c:\compaq\survey\survey.txt
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ASKER

I gathered that much...already. Thanks