Google also takes responsibility. Ben Treynor, Google's VP Engineering and Site Reliability Czar, said on Google's Gmail blog that Google backs up all Gmail to tape. "Since the tapes are offline, they're protected from such software bugs," he blogged. "But restoring data from them also takes longer than transferring your requests to another data center, which is why it's taken us hours to get the e-mail back instead of milliseconds."
Treynor said a storage software update introduced the unexpected bug, which caused 0.02% of Gmail users to temporarily lose access to their e-mail.
It's Not Just Google Services You Need to Worry About
But that doesn't mean you should forego a solid back-up plan for all your online data. If the worst ever does happen, and a free Web service dumps your stuff permanently, the only response you can reasonably expect from these companies is: "oops, sorry."
With that in mind here are a few suggestions on how to add an extra layer of security in case the cloud lets you down one day.