After leaving users locked out of their own files for about two hours, Google Drive began functioning again around 2 p.m. Friday, USA east coast time.
Google Drive, Docs editors and Classroom have been restored for 99.5% of affected users as of 1:01 PM Pacific, and for the remaining 0.5% of users by 2:10 PM Pacific. During the event, our top priority was to restore service. We are now turning our attention to understanding what caused the outage; our preliminary diagnosis is that this was caused by a code push which behaved differently in widespread use than it had during testing. If you were affected, we apologize for the disruption this caused. We are calculating the impact to our business customers and will issue SLA credits as appropriate. Full details will follow in our incident report.
Read the full article: http://techcrunch.com/2015/10/09/the-dog-ate-our-homework-google-drive-is-down/#.xikdby:YqVl