Hi,
I am new to this forum, but I have been reading a lot of the posts on here in an attempt to fix a problem I have.
I have a Windows Server 2008 R2 RAID-5 array. It is made up of 5 2TB disks.
Recently the array failed. I cannot remember the original error message now, I think it was "Failed Redundancy". I have used a Western Digital disk tool to determine that one of the disks is not operating well, but the other 4 are.
I removed the faulty disk, and replaced it with a new one. At this point, disk manager shows 4 Failed, online disks, one unallocated disk and one missing disk. It would not let me repair the array in this state - it was unhappy that the original failed disk was missing.
Today I have plugged the failed disk back in, along with two new drives. In that situation, I do get the "Repair volume" option, but each time I use it, it takes one seemingly healthy disk out of the array and uses one of the new disks. When it has finished, the disk that I think is failing is still in the array, and the array as a whole has a status of "At risk". Upon a reboot, it usually resorts back to "Failed Redundancy" and shows the newly added disk as the cause of the problem. It does this regardless of which of the two new disks I use to repair it.
I have no idea what is going on at this point! I would have thought it would remove the disk that I think is faulty and use one of the new ones and the status would be "Healthy". Instead, each time I try a repair, a different drive has the warning symbol next to it in disk manager, and it is always in Failed Redundancy or At Risk state.
I need some advice!
Thanks for your time,
Paul