[SOLVED] Is it possible to reconstruct RAID configuration?

lemonade_29

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Mar 1, 2014
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Motherboard: Gigabyte GA-H170N-WIFI
BIOS Version: F22e
RAID System: Intel RST
Drives: (4) Intel 540s Series 2.5" 1TB SSD

I was momentarily taken over by the big dumb and reset my BIOS settings while using a RAID 5 setup. This predictably wiped the RAID configuration on the disks and turned the RAID volume into Failed status. From the original array of 4 disks, 2 disks are now showing as non-RAID disks, while 2 disks stayed in the array.
I know that normally this is a death sentence for RAID 5, but I believe in my case it's not as bad. My hypothesis is that only the RAID configuration got messed up in the 2 non-RAID disks. The question then becomes: Is the a way to manually recreate RAID configuration on disks so the BIOS recognizes them as member disks again? And if so, do I need to see a data recovery professional for this? I suppose there's always the option to try to copy everything out, but that data recovery process is expensive for a RAID setup so I'd explore this easier option first, if it is possible at all.
 

rforce

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Nov 26, 2007
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Don't waste your time with anything easeus.

Best practice for data recovery is to get a full sector-by-sector clone/image of each drive and then work with the copies in whatever data recovery programs you choose to use. Most data recovery programs have some level of ability to work with RAID recoveries. Here are my recommendations:

  1. Reclaime (auto feature is stupid slow, but helpful for those who don't have a clue what they are doing)
  2. UFS Explorer (very powerful and fast for experienced data recovery professionals)
  3. R-Studio (probably the most popular program used by data recovery professionals)
 

rforce

Distinguished
Nov 26, 2007
71
1
18,665
6
Don't waste your time with anything easeus.

Best practice for data recovery is to get a full sector-by-sector clone/image of each drive and then work with the copies in whatever data recovery programs you choose to use. Most data recovery programs have some level of ability to work with RAID recoveries. Here are my recommendations:

  1. Reclaime (auto feature is stupid slow, but helpful for those who don't have a clue what they are doing)
  2. UFS Explorer (very powerful and fast for experienced data recovery professionals)
  3. R-Studio (probably the most popular program used by data recovery professionals)
 

lemonade_29

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Mar 1, 2014
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Thanks for the replies, I have looked into the Reclaime path and it does look promising. I performed a scan, which ended with full confidence bar which is good news. However, while I was looking into Reclaime, I discovered TestDisk. Many threads in the TestDisk forum (like those below) indicate people have been able to repair the array in place by reconstructing the RAID metadata on the disks. I will copy things out first and then try the TestDisk option.

https://forum.cgsecurity.org/phpBB3/viewtopic.php?t=5947
https://forum.cgsecurity.org/phpBB3/viewtopic.php?t=5831
 

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