Ever wondered terminology of Number of 9's in SLA. See the actual downtime offered by multiple vendors in market.
Number of 9’s
|
Availability Percentage
|
Total Annual Downtime
|
2
|
99%
|
3 days, 15 hours
|
3
|
99.90%
|
8 hours, 45 minutes
|
4
|
99.99%
|
52 minutes, 34 seconds
|
5
|
99.999%
|
5 minutes, 15 seconds
|
Hope this helps understanding SLA