IT Service

"Uptime" vs "Availability"" What's the Difference?

"Uptime" and "Availability", two common IT terms

Uptime and availability, the two most often referred to terms in conveying the reliable of an IT service.  Service providers often boost their service uptime in 99.99% (four-9s), 99.999% (five-9s) or even higher percentages.  For some, these two terms seem to refer to the same things and thus are used interchangeably.  As a result, a service advertised with the five-9s (or higher) uptime gives the perception of a very reliable service for a perspective IT service customer.  However, no

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