Internal vs. Time machine drive size

Discussion in 'Buying Tips and Advice' started by ConnYoungy, Jan 11, 2013.

  1. macrumors 6502

    Joined:
    Aug 14, 2010
    #1
    I'm in the process of ordering a new MacBook and want to go for the 1tb drive upgrade and realised my time machine backup drive is also 1tb, will that matter?

    The reason I ask is that I can't remember if the time machine drive has to be larger than the drive it backs up or not?

    Thankyou!
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    The actual size does not matter, only the used capacity does.

    If you have a Mac with a 1 TB HDD and 232 GB of it are used and you have an external HDD with 500 GB capacity, you can use that 500 GB HDD to backup the 1 TB HDD with its 232 GB used.

    Time Machine FAQ
     
  3. thread starter macrumors 6502

    Joined:
    Aug 14, 2010
    #3
    Brilliant, thankyou!
     
  4. macrumors 65816

    designs216

    Joined:
    Oct 26, 2009
    Location:
    Down the rabbit hole
    #4
    The larger the TM drive the more incremental backups you'll be able to retrieve. So if you're in a position to fill up your primary, your back up will only hold one copy before TM overwrites.
     
  5. macrumors 68020

    Joined:
    Jan 7, 2003
    Location:
    Washington, DC
    #5
    I personally don't understand the need to keep more than a couple of incremental backups. If my HD/computer dies, all I need is the most recent, and I can't remember ever losing something and not realizing it immediately and being able to get it from the most recent backup.

    I use Time Machine Editor to reduce backups to daily, so I don't encounter the problem of not realizing I'm missing something until more than an hour has passed.
     

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