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Saving my raid 1 software raid.


MarkJohnson
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My server was getting extremely slow from test so many different software package that it had become unusable for streaming my 1080p videos(over 100 process running in task manager). I decided to reinstall WHS2011 instead of trying to track down the problem.

 

My issue is I had setup a software raid1 insead of going hardware raid1. I select to undo the software raid1 and have now reinstalled whs2011 and when I plug in my wd 2tb black drive it doesn't show up? I bring up disk management and it says it's a dynamic disk1 with a yellow tringle and says foreign underneath(i guess thats a fs type?). The summary of drives says it's a NTFS drive still.

 

When I right click the drive I have 2 options.

 

Import Foreign Disks

Convert to basic disks

 

I'm afraid to try either one and possible lose all my data.

 

Are these even the options I need to restore the disk back to recover my data?

 

Google hasn't been kind, all I seem to get is hardware RAID1 issues. Software RAID1 doesn't seem very popular.

 

Thanks

-=Mark=-

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Software RAID for me was troubling years ago when set up incorrectly. We lost a physical drive that had multiple logical volumes created in what could have been someone's attempt at redundancy. Unfortunately it was simply a bad day. Anyway I found this article on technet, it's old but should shine some light on your Import Foreign Disks options. I can tell you from experience, converting to basic disk will destroy your data with this option. You have backups, right? I would consider doing a bit more research and weigh your options before moving forward with either decision because this is just my advice as I don't have a detailed setup picture of your environment. Nor am I the one sitting in front of your server. Good luck and keep us posted. I'm sure others will chime in with their suggestions.

 

Import

http://technet.micro...y/cc771775.aspx

 

Convert to basic

http://technet.micro...y/cc776315.aspx

  • The disk must not have any volumes nor contain any data before you can change it back to a basic disk. If you want to keep your data, back it up or move it to another volume before you convert the disk to a basic disk.
  • Once you change a dynamic disk back to a basic disk, you can create only partitions and logical drives on that disk.

Edited by jazzerjay
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Forgot to update post.

 

Since I had two drives mirrored I went ahead and did the foreign option on one of them and it went fine. I said it made a simple volume and restored everything fine. The disk is in dynamic mode still.

 

Is dynamic mode going to affect anything? My drives are in AHCI mode if that matters.

 

I have both disks restored and can change to basic mode and copy everything back over.

 

Thanks

-=Mark=-

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You should be fine. I don't believe you'll be able to use basic disks and software raid them based on several articles i read today.

 

http://www.partitionwizard.com/help/what-are-basic-and-dynamic-disks.html

 

http://www.techrepublic.com/article/understand-the-differences-between-basic-disks-and-dynamic-disks/5797060

 

http://msdn.microsoft.com/en-us/library/windows/desktop/aa363785(v=vs.85).aspx

 

But I haven't had time to test basic vs dynamic. Drive performance on a single disk between basic and dynamic is irrelevant from what I can find. (Unless of course you're in a RAID config - like has been discussed.)

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To use MS software RAID (i.e. RAID set up through Disk Manager) the drives have to be Dynamic.

 

Importing a Foreign Disk does not destroy data. It really just changes the drive's unique signature (SID) so the disk now 'belongs' to the system it's currently installed in.

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