A software system crashed 20 times in the year 2017 and for each crash, it took 2 minutes to restart. Approximately, what was the software availability in that year?

Concept:

Software availability:

It means the software is present at the time it is required to do some tasks.

Explanation:

Software availability can be calculated as :

A system crashed 20 times in the year 2017 and takes two minutes every time to restart .

Crash time = 20 × 2 = 40 minutes

As 2017 is not a leap year. So the total days are 365.

There are 1440 minutes in a day.

So, total time = 365 × 1440 = 525600 minutes

Working time of system = 525600 – 40 = 525560 minutes

So, availability of software (in %age) = \(\frac{{525560}}{{525600}} \times 100 = \;99.9924\% \)