WD My Book Hard Drive for Mac 3 TB (WDBYCC0030HBK-NESN) $109.00
http://www.amazon.com/dp/B00E6N9HEC/
WD My Book 3 TB USB 3.0 Hard Drive with Backup (WDBFJK0030HBK-NESN $103.97
http://www.amazon.com/dp/B00E3RH63A/
ANY backup drive is better than NO backup drive. However I'll +1 those who recommend a desktop-class HD over a portable. I've got a 7200rpm 3TB desktop-class USB 3.0 for Time Machine on my main iMac (1.128TB) and it's worked invisibly & flawlessly for three years. Last weekend I ran a script that screwed-up my iTunes library and Time Machine saved my a$$. Extremely happy with how elegantly Apple handles the mundane -- while vital -- task of incremental backups.
Sorry to hijack the thread. What is everyones thoughts on something like the WD MyCloud drive. Not for Time Machine back ups but rather to host my iTunes Library? I was thinking of ditching my 2009 iMac in place of a Macbook. I know the latest MacBooks come with up to 128 gig of storage, so I realize the need for an external drive.
Get an external powered drive rather than a portable one like dianeforegon's suggestion above.
Portable drives require you to remember to plug it in every so often which no one ever does, and its more expensive and unnecessary. With the externally powered, I plug mine into my USB hub and leave the power on, that way when I'm at my desk, I plug in the USB hub, the drive powers up and the TimeMachine backup triggers automatically. I never have to think about it anymore. When I disconnect my laptop from the hub, the drive powers down after a few minutes on its own.
Have one and love it. I backup two macs to it via time machine and it streams all of my media over dlna.Sorry to hijack the thread. What is everyones thoughts on something like the WD MyCloud drive. Not for Time Machine back ups but rather to host my iTunes Library? I was thinking of ditching my 2009 iMac in place of a Macbook. I know the latest MacBooks come with up to 128 gig of storage, so I realize the need for an external drive.