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mirrored drive

Posted on 2016-07-17
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Last Modified: 2016-11-22
I'm running server 2012 r2.  I have two drives, 0 and 1.  They are mirrored.  Drive 0 has failed, I have the same hard drive to replace with.  It is on a Dell server and drives are hot swappable, I have physically changed the drive.  How do I add the new drive back to the mirror?  It is the same model and size of the on I took out?
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Question by:bergertime
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by:Richardson Porto
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The mirror is done on physical disk controller or at Windows level ? If at physical controller, let us know the exact controller model.
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by:bergertime
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This is on a software raid, not physical.  I should have included that, sorry.
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Richardson Porto earned 500 total points
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Can you post a print screen from the Disk Management Console including the status of the disks ? Are you using storage space of just the traditional mirror ? Anyway, here are the steps you need to recover form a failed disk: https://technet.microsoft.com/en-us/library/cc758037(v=ws.10).aspx

Note that the steps are to Windows Server 2003, but depending of your setup, it will apply for Windows Server 2012 R2 too.
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by:bergertime
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WP_20160717_10_35_32_Rich.jpg
Thanks, I'll give those steps a try.
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by:bergertime
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I don't want to have to redo this so.  Looks like I need to physically put the bad drive back in, break the mirror, then physically put the new drive back in and read the mirror.  When I did that before, it said I may lose everything so I chickened out.
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by:Richardson Porto
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I don't believe that you need to put back the failed disk to break the mirror, since when the KB says "right click the missing disk", it assumes that the failed disk is not present anymore. Anyway, if you have time, put back the failed disk, break the mirror, remove the failed disk from the physical slot, insert the new good disk on the slot, and then add the new good disk to the mirror.
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by:bergertime
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I was going by the note at the bottom that said "Before installing a new disk, break the mirror"

Either way, it's done.  Seems to be working correctly, thanks for the hand holding.  lol.
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by:bergertime
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Thanks!!
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