Uptime Time Pdf For Free

Percentage calculation Availability %Downtime per yearDowntime per day (24 hours)99% ("two nines")3.65 days14.40 minutes99.5% ("two nines five")1.83 days7.20 minutes99.8% ("two nines eight")17.53 hours2.88 minutes99.9% ("three nines")8.77 hours1.44 minutes15 more rows

99.9% uptime equals to a period of downtime of 1 minute and 26 seconds per day. 99.99% uptime equals to a period of downtime of less than 9 seconds per day.

Reliability: "five nines" makes all the difference A 99.999% uptime SLA means that you should expect less than six minutes of downtime over the course of a year?and, if we should fail to deliver, we'll compensate you for it. Our competitors offer a 99.9% uptime level. That's just three nines.

The secret to achieving the next ?9? for 99.99% is cluster technology. Often referred to as high availability solutions, clusters are essentially two or more physical servers connected in a single network. If one server fails, application support resumes on a second server.

As you can tell, the difference between 99.99% availability and 99.9% availability means an additional 7 hours of acceptable downtime for that service everywhere. That breaks down further to 1 minute and 26 seconds of downtime everyday, or 10 minutes and 48 seconds every week.

Well, with 99.999% uptime, the time your website is down adds up to just a little over 5 minutes per year. Now, that's impressive! However, achieving five nines of uptime is no small feat.

Availability is normally expressed in 9's. For example, ?5 nines uptime? means that a system is fully operational 99.999% of the time ? an average of less than 6 minutes downtime per year. The chart shows what impact various availability levels have on your server downtime.