Does anybody here use an external drive without a power cord for their Time Machine?

Discussion in 'iMac' started by Kurrgo, Oct 18, 2014.

  1. Kurrgo macrumors member

    Joined:
    Oct 6, 2014
    #1
    I'm thinking about getting a WD drive to perform my Time Machine backups and I'm wondering if it's ok to use one that is powered via the USB. I don't want to damage or burn anything out having it permanently connected and am wondering if somebody can shed some light.

    Thanks!
     
  2. sjinsjca macrumors 68000

    sjinsjca

    Joined:
    Oct 30, 2008
    #2
    Sure. One or two should be fine. For more (I have five, to provide my family with duplicative backups), use a good-quality powered hub.
     
  3. Kurrgo thread starter macrumors member

    Joined:
    Oct 6, 2014
    #3
    So you have a couple of USB powered and the additional are powered backups that are always on?
     
  4. sjinsjca macrumors 68000

    sjinsjca

    Joined:
    Oct 30, 2008
    #4
    No, in my case all are currently connected via the hub. But once I had two connected directly.
     
  5. maf2k8 macrumors 6502

    Joined:
    Jul 14, 2009
    #5
    I have 2 external WD USB3 drives connected to my new 27" iMac. One is used as a TM backup and the other as a extra storage drive for music/photos/movies ( since my iMac only has a 512ssd ) and i have no issues.

    What issues are you worried about if i may ask?
     
  6. Kurrgo thread starter macrumors member

    Joined:
    Oct 6, 2014
    #6
    I wasn't sure if keeping a drive that is powered by usb would wear out of damage the Mac. I wouldn't be plugging in the drive but allowing the Mac to power the drive.
     
  7. Darklevel macrumors newbie

    Joined:
    Aug 1, 2008
    Location:
    UK
    #7
    I use a bus powered WD drive for my time machine, been running since June 2013 and i have had no problems.
     
  8. infantrytrophy macrumors regular

    Joined:
    Oct 27, 2013
    #8
    Yes, both my iMac and my wife's iMac have USB-powered external drives used for Time Macine backups. Both are WD Passport drives bought at Costco. No problems, both have worked well for many months.
     
  9. SteelBlueTJ macrumors 6502

    Joined:
    Apr 2, 2012
    Location:
    USA
    #9
    I use a WD USB3 1TB bus powered "portable" drive for my time machine backups on my iMac. I don't leave it connected all the time since I don't see the need to run constant backups. I plug it in about every 10 days or so when I get the pop up notification saying "no backups for 10 days." Works good enough for my needs.
     
  10. sjinsjca macrumors 68000

    sjinsjca

    Joined:
    Oct 30, 2008
    #10
    That's not enough. Drives fail. Have a duplicative backup strategy with, at a minimum, two backup drives that back up alternately. Ideally you'd have a remote or cloud-based backup also.
     
  11. koulmj macrumors 6502

    koulmj

    Joined:
    Mar 18, 2013
    #11
    I love when people recommend this, it reminds me that there's no data on my machine worth the price of another drive...god I need a life,
     

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