OpenStack
In 2010, Rackspace contributed the source code of its Cloud Files product to the OpenStack project under the Apache License to become the OpenStack Object Storage component.
In April 2012, Rackspace announced it is in the process of implementing OpenStack Compute as the underlying technology for their Cloud Servers product. With the change will come a new control panel as well as add-on cloud services offering databases, server monitoring, block storage, and virtual networking.
Rackspace confirms dedicated Sydney datacentre http://datacentre.rackspace.com.au/specifications.html
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