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260601jk English 5 cards

Cards in this deck (5)

1ReliabilityHow much you can depend on the computer system being available when you need it.
Usually measured in terms of availability
2AvailabilityThe amount of time that a system is operational, usually expressed as a
percentage over time.
E.g. 95% measured over one year.
3MTBFMean Time Between Failure: A measure of availability often quoted by hardware
manufacturers. eg: 2.56 years between failures means that, on average,
the hardware can be expected to last 2.56 years before it goes wrong.
4Hardware RedundancySpare hardware components are built into a system so that, in the event of a
component failing, the system can swap over to the spare one.
5Disaster RecoveryWhere a company has plans to replace a system quickly if there is a catastrophe
(fire or floods are two examples), These are designed to minimise the time the system is down.