4 Replies Latest reply: Dec 9, 2012 4:39 AM by clintonfrombirmingham
David Lees Level 1 (5 points)

I have a MacBook Pro that backs up to a Time Machine with no problems. However, the 250Gb hard drive of the Mac contains a 70Gb back up which eats significantly into the hard drive space. Is this necessary over and above the Time Machine backup and, if not, are there safe ways to reduce it?

  • LousyFool Level 4 (2,645 points)

    Unless the backup on the internal disk is older and contains files that you don't have elsewhere anymore, it doesn't do much for you other than enabling quick recovery of a file you deleted too quick. If the internal disk goes down, the backup on it will not help.


    If the backup on your external disk is accessible and usable, you can delete the one on the internal disk.

    If you want to keep it anyway but free up space on the internal disk, you can also first move it manually to the external disk.

    If for some reason you don't mind leaving it on the internal disk but want it to not take up space on the external disk, you can exclude it in TM from being backed up. Of course, this makes sense only before the first initial backup, otherwise it's already on yur external disk.

  • clintonfrombirmingham Level 7 (30,000 points)

    I think what you're seeing are local snapshots that Time Machine uses. That would account for the 'backups' shown on the Storage tab. Usually these backups are deleted in a weeks time - they're just a temporary repository that can be used to recover data.


    See Pondoni's article about local snapshots here -->> http://pondini.org/TM/30.html.


    Good luck,



  • David Lees Level 1 (5 points)

    Clinton ... Excellent! Thank you clintonfrombirmingham, Albama, as opposed to Birmingham, England which is 15 miles up the road from me.


    You have answered my question, sorted my problem and the link to Pondoni's article was first class.



  • clintonfrombirmingham Level 7 (30,000 points)

    Yeah - I'm a far piece from the UK - hey, but I've visited Birmingham, England quite a few times: I lived in the UK for about 3 1/2 years... glad you got it straightened out...