Raid-5 Rebuild Problem

Discussion in 'Mac Peripherals' started by M-Idiot, Feb 3, 2013.

  1. macrumors newbie

    Joined:
    Jan 8, 2013
    #1
    Hello, have a Q regarding Raid-5 rebuild times.
    I have a Lacie 4Big 12T running in Raid 5. Recently the powersupply broke down, forcing the harddisk to shut down abruptly. Now that i replaced the powersupply, the Raid will not boot but its apparently rebuilding the Raid (According to the manual that is. There is no indication of a failed drive, its just rebuilding the Raid). Its doing this for 4 subsequent days now. I have no access to any of the drives, the raid does NOT show up in finder.
    Is this normal behaviour? does it more than 4 days to rebuild a 4 x 3 TB Raid 5? Thank you for your advice,
    M-Idiot.
     
  2. macrumors 68040

    Joined:
    Aug 9, 2009
    Location:
    Portland, OR
    #2
    That seems like a long time. I would let it go for a few more days... but be ready to just reformat the array and restore from backup... assuming of course that you have been backing up.

    /Jim
     
  3. brand, Feb 3, 2013
    Last edited: Feb 3, 2013

    macrumors 601

    brand

    Joined:
    Oct 3, 2006
    Location:
    127.0.0.1
    #3
    Why would you not contact Lacie about this? When data is concerned you should handle it as expeditiously and directly as possible. Contact Lacie.
     
  4. macrumors 68040

    Joined:
    Aug 9, 2009
    Location:
    Portland, OR
    #4
    OP -- what is the status?

    /Jim
     
  5. macrumors member

    Joined:
    Jul 18, 2012
    #5
    Hi,

    I recommend you call us ASAP if the device has not returned to a working status. The rebuild time is usually not that long but it can be if the RAID was nearly full - especially 12TB. Hardware rebuilds scan each sector of each drive and rebuild from the parity on a RAID 5 and with that large of a unit it might take several days. Still, I would call us and start thinking about a backup solution - RAID is not a replacement for proper backups.

    503.844.4500 / www.lacie.com/mystuff

    ~mn, LaCie
     

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