Thursday, September 29, 2011

SLA uptime

SkyHi @ Thursday, September 29, 2011
Here is a handy chart of the pursuit of nines:
enter image description here
Interestingly, only 3 of the top 20 websites were able to achieve the mythical 5 nines or 99.999% uptime in 2007. They were Yahoo, AOL, and Comcast. In the first 4 months of 2008, some of the most popular social networks, didn't even come close to that.