Analysis of Windows Azure virtual machine sizes

*Update* Microsoft have updated their FAQ with instance pricing

In my previous post on the newly released Azure SDK I touched on the ability to set a size for your VM instance.

Lets delve down into what size virtual machines are available (values from http://msdn.microsoft.com/en-us/library/ee814754.aspx)

VM Size CPU Cores Memory Disk space for local storage
Small 1 1.7 GB 250 GB
Medium 2 3.5 GB 500 GB
Large 4 7 GB 1,000 GB
Extra Large 8 15 GB 2,000 GB

The sizes are easy to follow, they are all just multiples of the base VM size. Microsoft have said in their FAQ that the pricing is based on multiples of the small VM size. It is based on “CPU cores / hour”, so $0.12 per hour for the small VM, $0.24 for medium, $0.48 for large, etc.

Lets draw up a matrix to compare the Microsoft Azure and Amazon EC2 pricing side by side:

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