2 Replies Latest reply: May 8, 2012 3:32 PM by Tryphon RSS

    PANIC: cannot access my data after rebuilding process on SS4000-E

    Tryphon

      Hi,

       

      I have a problem similar to this thread: http://communities.intel.com/message/153407

       

      My config:

      Intel SS4000-E

      Firmware: fs-bc - 1.4-b710

      4 x Seagate ST3500320NS 500 GB drives, RAID 5

       

      One of these disks broke down yesterday. I replaced it by an identical disk spare. The rebuilding process started and worked during about 24 hours.

       

      Now it is finished but I cannot access my data. The storage status indicates Shared Folders : NOT READY.

       

      In ssh mode I cannot see the NASDisk-00004 folder where my data were stored.

       

      Something were wrong during the rebuilding process if I understand the system log page:

       

      May  7 17:11:16IStorage synchronization completed
      May  7 11:12:49IAdministrator logged in from IP address [192.168.1.102  ].
      May  7 06:05:14WA disk error has occurred. The storage system is now operating in degraded mode.
      May  7 00:01:20IDate/time adjusted to time server [pool.ntp.org  ]
      May  6 14:14:55IStorage synchronizing
      May  6 14:13:54IDisk [3  ] has beed added to current storage configuration

       

      Nethertheless the "Advanced : Disks" page displays Disk configuration : RAID 5 (Normal)

       

      I am completely lost and at this stage I need a serious HELP!

       

      Thank you in advance.

        • 1. Re: PANIC: cannot access my data after rebuilding process on SS4000-E
          john_s@intel

          Tryphon,

           

          The "Advanced : Disks" page displays Disk configuration : RAID 5 (Normal) because the Storage synchronization completed.

           

          From your system log page it looks like a disk error occured during the synchronization. The failure could be a bad sector on a second disk that contained parity or data for the array. That would mean you had a two drive failure (the original disk and the second disk with the disk error). Unfortunately a two disk failure in a RAID 5 array is unrecoverable.

           

          This is after the fact, but the first thing you should do, if you can, at a RAID failure, is to backup your data. For more information, see our support article on Planning for the worst case: the importance of a backup solution.

           

          Regards,

          John

          • 2. Re: PANIC: cannot access my data after rebuilding process on SS4000-E
            Tryphon

            I have a backup of a big part of my data. In fact I lost the data in  transit, recorded on the SS4000 for a short time before definitive  storage (because of lack of space on my computer). Bad luck, in the  meanwhile the disk 3 failed!

             

            I understand I have a second disk with bad sector. Of course with two errors my data cannot be recovered.

             

            I have the faulty disk (number 3). It makes a clic noise at starting and finally fails to start. Maybe a mecanical problem.

             

            Suppose one moment that disk 3 is repaired without loss of data: if I replace this disk 3 at position 3 of the SS4000-E, the system come back to its previous state, that is to say one error somewhere on disk 1, 2 or 4. But in RAID 5 configuration, data are available with only one error. In this case, how will react the SS4000-E viewing the original disk 3 (readable)? Is it a way to retrieve my data (if disk 3 is repaired)?

             

            I want to hope ...

             

            Thank you.