Rackspace operates two cloud infrastructures, a legacy Slicehost system and a next-generation OpenStack system. For reasons Toman explains to ServerWatch in an exclusive interview, Rackspace is using Xen server virtualization
technology for both systems.
Until this week, the open source Xen hypervisor had been developed under the auspices of Citrix, a vendor that Rackspace both partners with and competes against. Xen is now migrating to the Linux Foundation where it will be developed in as a collaborative project.