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Raid - Allow for Loss of Raid Controller

Posted on 2011-03-21
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Last Modified: 2016-12-08
I am running  a raid 10 array and wondering that if I lose my controller, how can I "see" the array.  Are there any tools out there that will load the array if I cannot replace the hardware?

In addition, if I am just running raid 1, can I just pull either of the HDDs out and then plug them in a standard non-raid configuration and read the contents?  
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Question by:chaffee007
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by:andyalder
ID: 35183332
It depends on the controller but in general you can't take disks off a RAID controller and read them on a non-RAID controller because the RAID controllers generally write metadata at the beginning of the disk that tells it what array it's a member of etc.

You can read the whole thing on a non-raid controller of course but can't mount it under Windows or Linux and expect to see the data. You can use a de-striping tool such as RAID reconstructor to read all the disks of an array with a non-raid controller and re-write it to another large disk for data recovery.

What controller have you got?
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by:chaffee007
ID: 35184379
I would have to look, but it is an 6 channel sata Adaptec that is about 5 years old.  Bought it at Micro Center for about $150.  How easy is the RAID reconstructor to use?
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by:chaffee007
ID: 35189990
Actually 4 port.
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andyalder earned 500 total points
ID: 35191171
RAID reconstructor is pretty easy to use as long as you have a non-RAID controller available plus a load of disk space to store images of the disks and room for the de-striped output image. You may get away without it using just RAID 1 though, getdataback off the same site ought to be able to skip the metadata and find the real filesystem.
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Author Closing Comment

by:chaffee007
ID: 35191500
Got back to me quickly.
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