back up

Discussion in 'Mac Basics and Help' started by bs0604, Oct 9, 2014.

  1. bs0604 macrumors newbie

    Joined:
    Sep 19, 2014
    #1
    I have all my files & pictures (close to a terabyte) on an external drive. A few months ago I backed up this external drive to a 2nd external drive which took a few hours. To do so I dragged the icon of the first external drive on to the icon of the 2nd drive. Its been a few months and I would like to refresh this backup. If I drag the icon again on to the 2nd drive's icon will it just back up those files that have been changed, taking only a matter of minutes, or is it going to replace every file, taking hours?
     
  2. Communicator macrumors newbie

    Joined:
    Mar 12, 2013
    #2
    From what you have written, I would expect it to make a second copy of ALL your backup files, so taking the same time or more that the first backup took.
     
  3. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #3
    I recommend using a backup software, it will determine what's changed and backup the deltas.

    I use Time Machine for day to day stuff, and Carbon Copy Cloner for my other backups that I want the ability to do a full restore. CCC also does deltas as well.
     
  4. Apple fanboy macrumors Core

    Apple fanboy

    Joined:
    Feb 21, 2012
    Location:
    Behind the Lens, UK
    #4
    Same here. Time Machine for daily back ups. CCC on a third drive every week.

    Also if your main drive fails, you can boot from a CCC drive (not TM).
     

Share This Page