Mar 12, 2014

Practical ITSM Advice: Defining Availability For An IT Service



Whenever I am confused & bored of my work ....i take some time to write about IT, Services, Quality, Methodologies ....etc in my blog…before that ..the only thing that strikes in mind to visit Stephen Mann Blog ...after reading his blog ...i just forget to write and blindly share the content written by Stephen...I hate that...but Stephen always writes in practical way and that’s what I like & admire ...as i am working in Telecom IT Service Provider company...always had this confusion about defining/calculating application availability.
Availability SLA target in most of the case defined as 99.999% or 99.955%.....
How do we calculate the availability??
Is it possible to meet the defined target of 99.999% ??
The way which we calculate the Availability SLA is correct ??
Do we consider Planned Downtime while deriving availability SLA's??
Do we consider nodes/regions?? Users impacted??...
Stuart Rance has answered my most of queries and Stephen has posted this article in his blog......interesting & worth reading....