Gmail seems to have 3 nines, although I couldn't find a better reference than this [1], where other services are included:
> [Google's infrastructure] delivers Gmail and other services to hundreds of millions of users with 99.978% availability and no scheduled downtime.
[1] https://support.google.com/googlecloud/answer/6056635?hl=en
PS. 99.978% availability translates as a downtime of ~ 2 hours/year total. Not bad! But it's when things break that we realize how performant and reliable they actually are.
Edits: various typos.
I'm consistently amazed how well Google and Facebook are at staying up. They're two services that I don't think I've really experienced a broad outage. Of course with Facebook's data designs, there's sometimes quirkiness as a result, but it's rarely completely off for me.
Google, I think I've only really noticed it offline once in the past 10 years or so. Not complaining at all.
Re:Gmail Services Global Outage
by hawaiianbrah on Tuesday January 29, 2019 @10:21AM
(#19026990)
Ok but like.... it takes <3 hours to change brake pads. So point taken, but numbers are more moderate than presented.
Gmail going down is like your car being in the shop. It's not equivalent to a plane crashing; the equivalent there would be the entire contents and history of your Gmail account being unrecoverably deleted, and you yourself had no backups. Of course, I'd still much rather have that happen a hundred times than be in one fatal plane crash ..