I was trying to solve the following question in software architecture.
A software system crashed 20 times in an year and for each crash, it takes 2 minutes to restart. Calculate availability in that year
I used the formula MTBF/(MTBF+MTTR) as given MTTR =2 minutes. But how can I calculate MTBF and availability?
- MTBF = Mean Time Between Failures
- MTTR = Mean Time To Repair
Update : I did it like
MTBF = 365*24*60-40/ 20, MTTR = 2*20