Difference between revisions of "System availability"
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|90%||1||36.5||days/year | |90%||1||36.5||days/year | ||
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| + | |99%||2||3.65||DAys/year | ||
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| + | |99.9%||3||8.78||hours/year | ||
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| + | |99.99%||4||52||minutes/year | ||
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| + | |99.999%||5||5||minutes/year | ||
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[[Category:AlphaCom E System]] | [[Category:AlphaCom E System]] | ||
Revision as of 13:49, 4 August 2009
System availability
System Availability
- The percentage of time that the system can perform its intended function
System Availability = 1 – System Downtime
Downtime per year
| Availability | Nines | Downtime | |
| 90% | 1 | 36.5 | days/year |
| 99% | 2 | 3.65 | DAys/year |
| 99.9% | 3 | 8.78 | hours/year |
| 99.99% | 4 | 52 | minutes/year |
| 99.999% | 5 | 5 | minutes/year |