Hello folks!
This is my first post and, yes, I am a total noob when it comes to FreeNAS. I am a data recovery specialist and I have recovered data from LOTS of RAID arrays over the years but this is the first time anyone has brought in an array from a FreeNAS.
So a client of mine was upgrading the power supply in his FreeNAS and he mistakenly installed the wrong power cable to 2 of the drives. Of course he did not realize what he had done until he powered it up. 2 of the drives had power pushed in through the ground pins because the cable he plugged in was from his old power supply and was not pinned out the same as his new one....OOPS! The magic smoke has escaped! Since all 4 drives are the same model I was able to migrate the ROM data over to one of the other PCBs only to find out that the power serge also took out the drive's PreAmp chip. In order to get these drives working again I would have to take them into the lab and replace the head stack assemblies on both of the failing drives.
The FreeNAS was configured as a RAID 10. I have analyzed the two remaining drives using a hex editor and it's pretty clear that the data on those 2 drives is different at every sector that I checked so it appears that I have a complete striped pair. I attempted to import just that pair but it was not successful.
My question for the FreeNAS community,...is there a way to mount the striped pair of drives without the 2 failing drives? Would it be possible to put 2 new drives into the array and rebuild the data set using the 2 good drives?
I am very new to FreeNAS and I figure it's probably a good idea to ask the experts before throwing a bunch of commands around that I do not fully understand.
Thank you in advance. Any help would be appreciated.
Fraser Corracne
Progressive Tech
ps. I am working with clones of the good drives so that I don't do anything to the originals that I can't undo.
This is my first post and, yes, I am a total noob when it comes to FreeNAS. I am a data recovery specialist and I have recovered data from LOTS of RAID arrays over the years but this is the first time anyone has brought in an array from a FreeNAS.
So a client of mine was upgrading the power supply in his FreeNAS and he mistakenly installed the wrong power cable to 2 of the drives. Of course he did not realize what he had done until he powered it up. 2 of the drives had power pushed in through the ground pins because the cable he plugged in was from his old power supply and was not pinned out the same as his new one....OOPS! The magic smoke has escaped! Since all 4 drives are the same model I was able to migrate the ROM data over to one of the other PCBs only to find out that the power serge also took out the drive's PreAmp chip. In order to get these drives working again I would have to take them into the lab and replace the head stack assemblies on both of the failing drives.
The FreeNAS was configured as a RAID 10. I have analyzed the two remaining drives using a hex editor and it's pretty clear that the data on those 2 drives is different at every sector that I checked so it appears that I have a complete striped pair. I attempted to import just that pair but it was not successful.
My question for the FreeNAS community,...is there a way to mount the striped pair of drives without the 2 failing drives? Would it be possible to put 2 new drives into the array and rebuild the data set using the 2 good drives?
I am very new to FreeNAS and I figure it's probably a good idea to ask the experts before throwing a bunch of commands around that I do not fully understand.
Thank you in advance. Any help would be appreciated.
Fraser Corracne
Progressive Tech
ps. I am working with clones of the good drives so that I don't do anything to the originals that I can't undo.