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There has been a lot of discussion about whether or not Amazon EC2 is oversubscribed and as Reuven Cohen points out, oversubscription is used across a variety of services and industries.  The most widely accepted and understood oversubscription model is that of airlines, where it is common practice to overbook flights by as much as 50%.  ...

Cloud computing is obviously green and good for the environment.  For example, Computing power located near green resources – hydroelectric power or other renewable resources like they have in Iceland.  Elasticity - resources don’t have to sit around consuming power when underutilised and can be (virtually) spun up when ...

In an ever more agile world with test driven development and emergent design, has cloud computing come along at a perfect time to solve some of the age old problems of performance and scalability management? Let’s first look at a couple of the classic problems: At the start of the project, management are pulling together budgets as they build a ...

Shrink yourself to the size of an ant and think of a classic server as a mini data centre. Banks upon banks of memory, multiple disks, many CPU cores and even network interfaces. The OS manages all of the many processes and threads, sharing the resources amongst them and when they demand more resource it makes it available to them – on demand and ...

Cloud portability might become a topic of conversation more often as greater numbers begin to adopt their chosen cloud platform. How do we not repeat the age old “Single Vendor Lock In” in our excited rush? If the cloud provider is an Infrastructure play (i.e. Virtual Machines a la EC2 or GoGrid) then the deployment process becomes critical. Is it ...

I should have mentioned it earlier, but the Microsoft offerings are based around Windows Server 2003 R2 and SQL Server 2005. I wonder why this is not Windows Server 2008 and SQL Server 2008? Were Microsoft unwilling? Did it take a long time to certify the Amazon Machine Images and the 2008 editions are on the way? James Simmonds mentioned to me ...

I received my Amazon Web Services developer's news shot last week. It followed up on recent announcements that their Elastic Compute Cloud (EC2) offering was moving from Beta into General Availability. With that announcement came a Service Level Agreement (SLA) of 99.95% within a region and failing to do so would make customers eligible for ...