So how critical is system uptime to your organisation? Uptime or Availability is calculated as a percentage of time that a system is fully operational. When your systems stop, your business stops. Do you want your staff twiddling their thumbs and your customers going elsewhere in frustration – or do you need great system availability?
We’ve done our own calculations on exactly what availability represents in terms of days, hours and minutes of downtime. Bear in mind that public cloud is typically only between 99.95 and 99.9% uptime and high availability clusters are around 99.95% uptime. That’s still a considerable amount of downtime for your business critical systems.
If you need real system availability then think about the Stratus suite of products. Stratus everRun high availability software and Stratus ftServer provide ‘five nines’ and ‘six nines’ uptime for your business. What does your business need?
|90% (‘one nine’)||36.5 days||73 hours||16.8 hours|
|95%||18.25 days||36.5 hours||8.4 hours|
|97%||10.96 days||21.9 hours||5.05 hours|
|98%||7.3 days||14.4 hours||3.36 hours|
|99% (‘two nines’)||3.65 days||7.3 hours||1.68 hours|
|99.5%||1.83 days||3.65 hours||50.4 minutes|
|99.8%||17.52 hours||87.6 minutes||20.2 minutes|
|99.9% (‘three nines’)||8.76 hours||43.8 minutes||10.1 minutes|
|99.95%||4.38 hours||21.9 minutes||5.05 minutes|
|99.99% (‘four nines’)||52.56 minutes||4.38 minutes||1.01 minutes|
|99.999% (‘five nines’)||5.26 minutes||26.3 seconds||6.06 seconds|
|99.9999% (‘six nines’)||31.5 seconds||2.63 seconds||0.605 seconds|