How does Time Machine saves data?

Discussion in 'Mac Apps and Mac App Store' started by LeandrodaFL, Oct 14, 2011.

  1. LeandrodaFL macrumors 6502a


    Apr 6, 2011
    I know Time Machine makes hourly backups. Since I have a 300GB hard disk, I tought my 500GB external hard drive (wich Im using for backup) would get filled in a day. It doenst, the first backup is of course your whole system, but then Time Machine simply add the upadtes aparantly.

    How are these updates writen to the disk? I mean, does Time Machine simply ads an upadte folder, or it upadtes the current last backup and keep smaller files for previows "system snapshots"?

    Im asking this cause I want to delete older backups cause I dont want my externla hard drvie filling up, but I fear "breaking" the backup.
  2. Mawal macrumors regular

    Aug 19, 2010
  3. jsm4182 macrumors 6502

    Apr 3, 2006
    Beacon, NY
    When your external drive gets full Time Machine automatically deletes older backups to make room for newer backups.
  4. LeandrodaFL thread starter macrumors 6502a


    Apr 6, 2011
    Thanks, thread solved.

    Im creating a new one, "how to tweak Time Machine"

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