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Google Pledges to Restore Disabled Gmail Accounts Shortly

| Tuesday, March 1, 2011
In a blog post Monday evening, Google promised that the accounts of 150,000 Gmail account holders (0.02% of Gmail’s userbase, according to Google), which were affected by a reset glitch over the weekend, will be restored shortly.

More:
Imagine the sinking feeling of logging in to your Gmail account and finding it empty. That’s what happened to 0.02% of Gmail users yesterday, and we’re very sorry. The good news is that email was never lost and we’ve restored access for many of those affected. Though it may take longer than we originally expected, we're making good progress and things should be back to normal for everyone soon.

I know what some of you are thinking: how could this happen if we have multiple copies of your data, in multiple data centers? Well, in some rare instances software bugs can affect several copies of the data. That’s what happened here. Some copies of mail were deleted, and we’ve been hard at work over the last 30 hours getting it back for the people affected by this issue.

To protect your information from these unusual bugs, we also back it up to tape. Since the tapes are offline, they’re protected from such software bugs. 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 email back instead of milliseconds.

So what caused this problem? We released a storage software update that introduced the unexpected bug, which caused 0.02% of Gmail users to temporarily lose access to their email. When we discovered the problem, we immediately stopped the deployment of the new software and reverted to the old version.

Read more: GMail blog

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