time machine backup

Discussion in 'Mac Basics and Help' started by mrdinh, Feb 2, 2010.

  1. mrdinh macrumors regular

    Sep 7, 2007
    if you use a external harddrive, i assume you have to turn it on 24hrs a day?...and when the mac sleeps does it still back up on schedule?

    can i use a internal drive ie. bay 2 or 3 etc?

  2. miles01110 macrumors Core


    Jul 24, 2006
    The Ivory Tower (I'm not coming down)
    I don't keep my drive on 24 hours a day. If you plug in the drive and turn it on, TM will back up pretty soon afterwards.
  3. mrdinh thread starter macrumors regular

    Sep 7, 2007
    also, ie. i have 3 internal drives...1 for the main os, 1 for timemachine, and 1 for storage...does timemachine auto backup on all drives?

  4. BlueRevolution macrumors 603


    Jul 26, 2004
    Montreal, QC
    All of the HFS (Mac)-formatted non-Time Machine partitions, yes. I suggest blacklisting your non-essential files, though, unless you have tons of space on the Time Machine drive. Backing up two drives to one may prove problematic as Time Machine doesn't make compressed backups. If you're trying to back up two full 500 GB drives, your Time Machine drive should be at least 1.5 TB to account for versioning.

    I suggest buying a dedicated external drive for Time Machine. Maintaining a backup is a good idea for many reasons, and an internal backup drive won't help you if the computer is stolen or dropped, or the PSU surges and fries all of the drives in your box at once.

    Since hard drives only have a limited shelf life, it's a good idea to leave your (external) backup drive off most of the time if you don't use it for versioning as well as traditional backup. Your system will remind you if you haven't made a backup in 7 days. And no, Time Machine won't back up while your computer is sleeping.
  5. Jackyl macrumors newbie

    Dec 17, 2008
    Just go the TM in the menu bar and click "Back up now." you don't have to wait at all.
  6. bobr1952 macrumors 68020


    Jan 21, 2008
    Melbourne, FL
    When I first bought my iMac, I left TM on--thought it was pretty cool to have data every hour--I back up to a Time Capsule. But I soon tired of the every hour thing as I really don't create that much new information so I turned TM off and now back up manually ever 2 or 3 days. For me, this is a much better method until Apple decides to make TM more flexible.
  7. Tumbleweed666 macrumors 68000


    Mar 20, 2009
    Near London, UK.

    In which case, whats the point of that??, the backups will be teeny tiny, and also may catch that one time you badly altered a really important file/photo/whatever 3 hours ago and the latest backup you have is 3 days old ! Thats the entire point of TM (to me), apart from needing no hands-on, so you dont forget to take a backup, it can also catch the stuff that happens during the day.

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