If it’s up… It’s down… per year
- 90%: 876 hours
- 95%: 438 hours
- 99%: 87 hours, 36 minutes
- 99.9%: 8 hours, 45 minutes, 36 second
- 99.99%: 52 minutes, 33.6 seconds
- 99.999%: 5 minutes, 15.36 seconds
- 99.9999%: 31.68 seconds
Interesting article on Information Security and the lack of quantifiable metrics. I like the following paragraph:
“Regardless of legal compliance, it is a pretty good idea to be able to measure the adequacy of in-place security controls, policies and procedures anyway. How else do we know if our existing controls are giving us any benefit or if we have shortfalls?”
The article makes also some reference to possible source of metrics for Information Security that might be of interest for anyone currently in the process of defining those kinds of measurements.
SMART = Specific, Measurable, Attainable, Relevant, and Time-Bound
The key ingredients for ‘good’ definitions of Key Performance Indicators (KPI) and its goals. I would add Relative to these ingredients to ensure that your KPI definitions (and goals) still apply when your business or volume grows. For example, you could take the number of open service calls (per period) as a KPI, but when the volume of service calls grows it is only natural that the number of open service calls grows. Therefore, the relative value against the number of reported service calls (e.g. % of open service calls) allows comparision of KPI values through time, even if the volume changes.
Three (relatively simple) KPIs to measure the quality of the call-answer process:
- ABA (Abandon Rate): Percentage of calls abandoned while waiting to be answered
- ASA (Average Speed to Answer): Average time (usually in seconds) it takes for a call to be answered by the service desk
- TSF (Time Service Factor): Percentage of calls answered within a definite timeframe, e.g. 80% in 20 seconds
For more KPIs visit the Mirror42 KPI Libraries.