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RAID 1 questions

C

chockomonkey

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Oct 11, 2003
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Got into work today and our AD server was not authenticating people correctly. When trying to check it out, it was slow as shit.

Did a reboot and noticed that the Raid 1 we have said Degraded, and one of the drives was Unavailable.

Everything came up fine, but I need help handling this RAID issue since I've never dealt with it before.

Step 1 should be backing shit up. This raid has the OS on it, and it's our AD server, so I really don't want to lose this shit. What's some good software to make an image of this disk? Would it be bad to do the backup while the raid is in a degraded state?

Step 2 I'm assuming would be identifying the drive. I hope i can do this by just unplugging shit and seeing what happens. Is that a bad idea?

Step 3 I'm assuming would be adding a new drive in the bad one's place. I don't think I have a spare around here that's the same size. Will it accept a larger drive?

Step 4 I'm assuming is ????

Step 5 is clearly profit.

Thanks for any help you can offer this RAID nooblet.
 
Most likely Active Directory which means 2000, 2003, 2008 or 2012 server. The big issue is what hardware are you running or are you using windows RAID? That will help to determine what hard drives you can use and how you will access the configuration to rebuild the array.

The first thing I would do is get a second AD server online. You should never rely on just one domain controller. If your lucky, you can sync a new DC to the existing one and demote the old one. AD is vary picky about restoring from backups which it sounds like you don't have. RAID1 is not a backup and it is vary likely that one failing drive caused corruption that was copied to the other drive or one drive had been dead for a while and the other is now dieing.
 
AD = Active Directory

Also, this is exactly why you should run 2 AD servers, instead of one, no matter how large or small your organization, even if you run it in some VM off your desktop.

The drive should be of the same size and model as the one that died to be safest.
 
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