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Interesting for all those people chasing "five nines": If 45 minutes today is their only downtime for the year, their annual uptime for 2013 will be just 1

Interesting for all those people chasing "five nines": If 45 minutes today is their only downtime for the year, their annual uptime for 2013 will be just 1 - 45/(60*24*365) or 0.99992.

wikwocket 14y ago
"5 nines" works out to about 5 minutes of downtime a year: very challenging to achieve. For reference, 4 nines is about an hour, and 6 nines is only ~30 seconds of downtime a year!
- pestaa 14y ago
  Lucky I have no need to do this math! Our requirements is 100%!