For the OpenStack private cloud shown below, consider the System Availability $($A$)$ of in terms of

MTTF $($Mean Time to Failure$),$ MTTR $($Mean Time to Repair$)$ and RMT $($Regular Maintenance Time$).$

Assume this OpenStack private cloud has:

$$An end$-$to$-$end two$-$nines SLA i$.$e$.$ the system availability is considered from any Internet

client up to any service$/$node $($A$=99\%)$;

$$MTTF of one year; and

$$MTTR of $48$ hours.

What is the value of RMT $($hours per month$)$ the OpenStack cloud administrator should schedule

to comply with the SLA?