NAS drive configuration

Discussion in 'Mac Accessories' started by wesg, Apr 21, 2009.

  1. wesg macrumors regular


    Jan 2, 2008
    Toronto, ON
    I'm building an NAS computer powered by Ubuntu, but I'm trying to determine the best drive setup for value and reliability.

    I have a 750GB drive, and intend on purchasing one more drive when I build the computer (probably 1.5TB) but I can't decide whether to use RAID 5 and maybe buy 2 750GB instead of a 1.5TB, or just buy the 1.5TB and use a script to copy important files. ANy suggestions? I want to limit spending, but still have substantial storage space.
  2. Sesshi macrumors G3


    Jun 3, 2006
    One Nation Under Gordon
    FYI: You need a minimum of three drives to run RAID5 - and in any RAID configuration the drives need to be the same size. The 650Gb drives should be at the cheapest buck-per-gigabyte level right now.
  3. nanofrog macrumors G4

    May 6, 2008
    But better with 4, as in a 3 drive RAID 5, there's no redundancy. :eek: :( Loose a drive, and you skip degraded and go straight to dead array. ;) :p
  4. Flash SWT macrumors 6502

    Flash SWT

    Mar 14, 2009
    Houston, TX
    I'm no expert but I don't think that is correct unless I'm misunderstanding your comment. The minimum number of disks for a redundant RAID5 array is three. If a single disk fails the array will continue to operate with only two disks and no data loss. You will take a read speed hit when the array needs to rebuild data from the failed disk using the parity information though.
  5. nanofrog macrumors G4

    May 6, 2008
    Oops, :eek: Right thought, but botched the numbers. :p

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