wireless time machine backups without an apple time capsule
if you’ve got some macs around the house, an airport extreme, and an extra external hard drive laying around - you’ve got all the pieces to get wireless time machine backups setup - no time capsule needed.
here’s what you’ve got to do:
format the external hard drive by firing up disk utility - give your drive a name - and format it with the file system of your choice (i chose mac os extended / journaled - just because i only have mac’s around under my roof - as it should be!). it’s easier to format the drive before you hook it up to the airport extreme because hard drives hooked up to the base station are inaccessible via disk utility. by formatting the drive before you hook it up to airport extreme’ll save you from having to unplug or plug in the drive at least once. i learned this lesson the hard way. once you’ve got it formatted - go ahead and plug in your external hd to the usb port on you base station.
now, fire up the airport utility - and make sure you airport extreme base station’s firmware is up to date. at the time of this post was 7.4.1. once your airport is up to date go ahead and open up the advanced mode - click ‘disks’ - and make sure you’re newly formatted is showing up on the ‘airport disks’ pane. just for the sake of this post - click the ‘file sharing’ tab within the airport disks configuration utility and make sure ‘enable file sharing’ and ‘share disks over WAN’ are checked. this’ll help when trying to find the ‘airport disk’ when we go to setup time machine on our mac(s).
alrighty, now that our airport disk is setup - head on over to your mac(s) that you want to setup your time machine backups. you can try to add the disk attached to your airport now within time machine’s preferences - but it wont show up. don’t worry, here’s the trick: first open up a new finder window. you should see your airport’s base station name located in the ‘shared’ section within finder. enter in your airport password if prompted. with your airport extreme still highlighted in finder double-click any folder that showed up after you authenticated to access your airport. now, hop back over to time machine’s preferences you should see your airport disk as a selectable hd.
viola - you should now be setup for wireless time machine backups - without a time capsule!