Website Monitoring http://www.jiploo.com/blog Jiploo.com Blog Fri, 12 Jan 2007 18:24:50 +0000 http://wordpress.org/?v=2.1 en 99.999 or Five Nines Uptime http://www.jiploo.com/blog/99999-or-five-nines-uptime/ http://www.jiploo.com/blog/99999-or-five-nines-uptime/#comments Wed, 14 Dec 2005 07:43:00 +0000 Ian Purton http://jiploo.com/wordpress/?p=10 99.999% Uptime is difficult to achieve and may not be worth the cost.

From the table below, your website would be unreachable for only 5 minutes a year if you are to be called 5 nines or 99.999% available.

Uptime (%) Downtime
90% 876 hours (36.5 days)
95% 438 hours (18.25 days)
99% 87.6 hours (3.65 days)
99.9% 8.76 hours
99.99% 52.56 minutes
99.999% 5.256 minutes
99.9999% 31.536 seconds

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