Thousands of Gmail accounts were wiped because of a software bug, Google says. Google has blamed a bug within a storage software update for the email wipes affecting thousands of users over the last two days. Many Gmail account holders found their emails and contacts had been almost completely erased.
Google explained, in some rare cases, software bugs could hit several copies of the data, so it didn’t help in this scenario the company had multiple copies of user data in numerous data centres across the world. Google also backs up user data to tape, where such software bugs cannot affect data. However, it also takes longer to restore such data and this is why it has taken Google hours to bring email back to some Gmail users.
Source: IT Pro