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The device 'Time Machine' by Apple does exactly that.

• Lewisham 15y ago
  No it doesn't, it backsup your Macs over wifi, and that's all it does. It won't access web services, which is they key point I was trying to make. The Time Capsule, and all home backup devices I can name, make the soon-to-be-outdated assumption that your data exists on a hard drive you own.
  • nodemaker 15y ago
    Well more elaborately your mac can access all web services and download all data which can then be wirelessly backed up by the time machine. For example my Dropbox folder is automatically synced on my mac which is then automatically backed up by the time machine.