I have several Windows 2011 Standard servers running Intel RAID 1 (mirror) . The raid controller is built into the Intel server motherboard. Several servers have had RAID failures upon start up - (they show degraded). I replace the "bad" drive and rebuilt the RAID ARRAY. That will solve the problem for a month or 2 then it shows up failed again. I have tried different brand hard drives and still the same issue. All the "bad" drives are never really bad, they test good. Has anyone had a similar situation or what might I be doing wrong?