The Deliverator – Wannabee

So open minded, my thoughts fell out…

Fours Nines – FAIL

Posted by Deliverator on June 6th, 2008

Theo and I had a discussion the other night that amongst many many topics landed on the subject of cloud computing. I argued that current outsourced storage and computing services just weren’t reliable enough for mission critical enterprise use. While you might save money in the short run, the lack of direct oversight and control over how those services are provided on the back end could seriously bite your business in the bottom line. Today, one of the highest profile of such services, Amazon’s S3 storage service (along with several other of their cloud computing initiatives) was down for close to 2 hours due to some sort of (claimed) ddos attack against their main commercial e-commerce site. To put this in perspective, today Amazon was down for longer than they claim their service should be down in a whole year. Their own S3 service level agreement states 99.99% availability. According to this wikipedia page about the poor use of 9’s for evaluating service availability/reliability, four nines of availability works out to about 52.6 minutes of downtime per year. FAIL

P.S. No I couldn’t do better :)