3 Replies Latest reply on Aug 19, 2009 5:05 AM by PeterUK

    When does a raid controller mark a disk as fail



      I have an Intel  raid controller with 3 disks configured as raid 5

      one of the HDDs has failed and I was waiting for a replacement HDD

      soon after the second HDD failed

      I had to send my hard disks to a specialist to recover my data

      the specialist said that the second Hard disk was in a worst condition than the first


      and I had a second case with a different server also having 3 had disks with raid 5 configuration

      the performance of the server was very bad after troubleshooting the problem i noticed that one of the hard disks is not functioning properly

      yet the status of the hard disk was on line

      when i replaced the hard disk the performance was normal again

      i wish someone could help me understand when the raid controller determains if the hard disk is damaged or not