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Monday, 1 December 2008

Service Level Agreement (SLA) figures

How does downtime affect your Service Level Agreement (SLA) with your customer?

What does 99.99999 % uptime per year mean?


If you want answers to these questions you have too look at the availability levels below. They show how many minutes, seconds downtime/system outage you are allowed to have in a year, to meet certain SLA figures and your contractual obligations.


Level of availability Total downtime per year
===================== ======================
99% 3.6 days
99.9% 8.76 hours
99.99% 52 minutes
99.999% 5 minutes
99.9999% 30 seconds
99.99999% 3 seconds


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