GATE | GATE-IT-2004 | Question 72
What is the availability of a software with the following reliability figures?
Mean Time Between Failure (MTBF) = 25 days
Mean Time To Repair (MTTR) = 6 hours
Explanation: Mean time between failures is not the average time something works then fail. It’s the average time between failures Mean time between failure(MTBF)s= total uptime / number of breakdowns Mean time to repair is the average time taken to repair something. Mean time to repair(MTTR)= total time down/number of breakdowns
Availability = Total uptime/(total uptime+total downtime)
= >25*24/(25*24 + 6) * 100
= 99.009 %
Therefore, Answer is D
This solution is contributed by Shashank Shanker khare
//Availability = MTBF/(MTBF+MTTR) * 100= 25*24/(25*24 + 6) * 100 = 99.009 %
Please Login to comment...