We had one of our ESXi servers die the other day and it looked to be caused by 2 dead drives in the 4 drive Raid 5 array.
We reseated the drives and put them back online and it asked us if we wanted to import the foreign array - we eventually said yes and the raid went into rebuild (the drives were reseated in the same bays they were in - no changes).
However, both servers data (VM files) were corrupt and not readable. We did a reinstall (none destructive) for ESXi 5.1 and can now see the files but none were readable or recoverable.
We have now failed over to our Axcient Backup system until we can diagnose and repair the Dell T610 server issues (either hard drives or raid or both). I have found online that you can use the Dell Open Manage boot disks to diagnose raid and hard drive issues but I have not been able to figure out how as there are no options I can see to do this only to reinstall the OS and build a new array/virtual drive.
The raid controller is Dell Perc 6/i SAS (which I believe is a LSI product) with 4x 500GB SAS 7.2K hard drives.
Any help you can provide would be appreciated.