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An interesting post on Google’s Blog talks about some things they have learnt around could computer and the needs ot their customers. According to their statistics based on planned and unplanned downtime, Gmail is one of the most reliable platforms around. Check out the following graph:
It compares the actual outage of Gmail over the last year against industry standard downtime for GroupWise, Lotus and Exchange. It’s not a 100% fair comparison, as the platforms the solutions run on are different (cloud vs data centre), but a user isn’t really concerned about how the technology is delivered, just what level of service they are exposed to.
The post also talks about another development on Google’s side. They are extending the 99.9% SLA promise to Premier Edition customers across a number of other cloud offerings including Google Calendar, Google Docs, Google Sites and Google Talk. It’s an interesting development, particularly as my personal biggest concern with cloud computer is reliability. This move will help drive expectations and the levels required from other providers. 99.9% reliability works out to 10 hours downtime per year (if my calculations are correct), which should be enough for pretty much anyone (although not everyone would agree)
Do you use Google Apps? How reliable do you find them?