Service Availability

The business expects all services to be available for 100% of the service window. Where this is not the case, this needs further analysis and possible corrective action.

Availability management is also quite subjective. Some organizations have a relatively simplistic approach and simply track keys programs and make sure that they’re up. Others take availability management to a whole new level and want to monitor availability in an end-to-end sense over a number of network nodes. All of these measurements are possible but it comes down to what is good enough for you.

In the following example, the business service availability chart shows that all services were 100% available for the whole month except for Business Banking, which was available for 98.6%. This could be due to an overnight update overrun, a hardware failure or a software failure. Further analysis to establish the nature of the shortfall is required, possibly followed by remedial action.

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