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Eric Novikoff

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Eric Novikoff's Blog IT managers and pundits speak of the reliability of a system in "nines." Two nines is the same as 99%, which comes to (100%-99%)*365 or 3.65 days of downtime per year, which is typical for non-redundant hardware if you include the time to reload the operating system and restore backups (if you have them) after a failure. Three nines is about 8 hours of downtime, four nines is about 52 minutes and the holy grail of 5 nines is 7 minutes. From a users' point of view, downtime is downtime, but for a provider/vendor/web site manager, downtime is divided into planned and unplanned. Cloud computing can offer some benefits for planned downtime, but the place that it can have the largest effect on a business is in reducing unplanned downtime. Planned downtime is usually the result of having to do some sort of software maintenance or release process, which... (more)

Are Humans Really Necessary for Maintaining SLAs in the Cloud?

Eric Novikoff's Blog Are humans really necessary for maintaining SLAs? In today's cloud computing deployments, especially with systems like Amazon's EC2, the users' application is responsible for both measuring and taking action on application performance issues. This complicates deployment and coding, as well as tying your application to a particular cloud provider. However, I believe that the next generation of cloud deployment frameworks will be able to do this automatically, by integrating general-purpose monitoring applications with policy-based cloud management engines.  Wh... (more)