Which Drive for TimeMachine Backup?

Discussion in 'MacBook Pro' started by dmk1974, Oct 29, 2010.

  1. dmk1974 macrumors 68020


    Sep 16, 2008
    I just bought a MacBook Pro 2009 model and would like to have a dedicated external hard drive for performing TimeMachine backups.

    I know there are probably great options out there for me to purchase, but I'd like to take one of the two that I currently have, format it to GUID and for Mac via disk utilities, and then use it for TM.

    The two external drives drives I have are:

    1.) WD5000AAV 500gb (about 2 years old, requires AC outlet)
    2.) Toshiba Canvio 640gb (about 3 months old, no AC outlet required).

    I just can't find specs for the actual drives inside of these external drives (drive speed, cache, etc.). Maybe it doesn't matter which? I just want whichever is fastest and most reliable. Thanks!
  2. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    Both are good. USB 2.0 is the bottleneck so there shouldn't be difference in performance.
  3. mstrze macrumors 68000

    Nov 6, 2009
    Bigger drive will serve you better too. You should seek a drive that's 1.5 times the size of the drive you are backing up, as a general rule, since Time Machine saves more than one 'backup' essentially.

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