A Globally Distributed OpenStack Swift Cluster

“As a core contributor to Swift, SwiftStack is keenly interested in pushing forward the development of Swift, specifically to enable Swift to support geographically distributed clusters. We got started on this development in the 1.5 release of Swift and are now continuing this work, which will be made available in upcoming releases of Swift. This overview details a design for this feature. We are also looking forward to discussing this in the upcoming OpenStack Summit in October…”

http://swiftstack.com/blog/2012/09/16/globally-distributed-openstack-swift-cluster/