Server operating system
Linux distribution
Open Enterprise Server[1] (OES) is a server operating system published by OpenText. It was first published by Novell in March 2005 to succeed their NetWare product.[2]
Unlike NetWare, OES is a Linux distribution—specifically, one based on SUSE Linux Enterprise Server.[3] The first major release of Open Enterprise Server (OES 1) could run either with a Linux kernel (with a NetWare compatibility layer) or Novell's NetWare kernel (with a Linux compatibility layer).[2] Novell discontinued the NetWare kernel prior to the release of OES 2, but NetWare 6.5 SP7, and later SP8, can run as a paravirtualized guest inside the Xen hypervisor (officially supported until 7 March 2012, Novell self-supported until 7 March 2015).