The open source hypervisor landscape got a lot more interesting today after the latest announcements from Red Hat and Citrix. Both were shots across the bow of VMware’s juggernaut, but Red Hat’s volley may have overshot and struck Xen.org in the stern.
Citrix, the flag bearer for Xen.org, recently announced that two significant hypervisor features would be made available in the free version of its Xen distribution, XenServer – live migration and multi-node management. Neither of these capabilities are provided in the free version of VMware ESX and live migration won’t be available in Microsoft Hyper-V until Windows Server 2008 R2. Citrix is also busily placing calls to the major Linux distributors hoping to sign them up to commitments to replace the free Xen.org hypervisor with the free XenServer.