Disk Utility secure erase "3 pass secure erase"

Discussion in 'macOS' started by KKhan495, Dec 7, 2015.

  1. KKhan495 macrumors newbie

    Joined:
    Dec 7, 2015
    #1
    I am needing to do a DOE-compliant 3-pass secure erase on a 12TB LaCie raid.

    I have the option of using USB 3 or Thunderbolt. Does anyone happen to know how long it would take to do a 3-pass secure erase on either one of those cables?

    I appreciate any help/info anyone has.

    Thanks!!
     
  2. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #2
    12TB?
    Either connection will take several hours for a multi-pass erase..
    So, start the secure erase. Let it go overnight.
    Should be done the following morning.

    Why will an hour or two difference be important for you?
     
  3. KKhan495 thread starter macrumors newbie

    Joined:
    Dec 7, 2015
    #3
    An hour or two doesn't make a difference. But if it's a difference between several hours to days, I would prefer to use the quickest method.

    I'm mainly just trying to collect as much info as I can to see if either way makes a significant difference.
     
  4. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #4
    If your company has security requirements, and you really need to assure that all data is un-recoverable, then much quicker than the multi-pass erase is: pull the hard drives, drill several 10mm holes through the hard drives. A drill press will make quick work of that. :D
    meanwhile, back at the bench - My gut feeling is that if you have TB2, that bus will be faster than USB 3.0. If your drives have a native thunderbolt interface (not all do), then the bus performance over TB will be faster. How much faster - depends on other factors, such as hard drive speed, and to some degree which Mac you use.

    Just curious - Let us know which you used, and how long it *really* took.
     

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