Open Enterprise Server

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OS familyLinux (Unix-like) and NetWare
Working stateCurrent
Source modelOpen source / Closed source
Latest releaseOES 23.4 / October 2023 (2023-10)
Marketing target
Package managerRPM Package Manager
Preceded byNetWare 6.5

Open Enterprise Server (OES) is a server operating system published by OpenText. It was first published by Novell in March 2005 to succeed their NetWare product.

Unlike NetWare, OES is a Linux distribution—specifically, one based on SUSE Linux Enterprise Server. 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). 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).

OES 1 and OES 2

Novell released OES 1, the first version of OES, on 25 March 2005. Since some users wanted backward compatibility with NetWare, Novell offered two installation options: OES-NetWare and OES-Linux. These are two different operating systems with different kernels and different userlands.

OES-NetWare is NetWare v6.5 equipped with NetWare Loadable Modules for various Novell services (such as NetWare Core Protocol, Novell eDirectory, Novell Storage Services, and iPrint) and open-source software (such as OpenSSH, Apache Tomcat, and the Apache HTTP Server).

OES-Linux is based on the SUSE Linux Enterprise Server (SLES) with added NetWare services ported to the Linux kernel: e.g. the NetWare Core Protocol, Novell eDirectory, Novell Storage Services, and iPrint.

Novell released OES 2, the second version of OES, on 12 October 2007. It was the first SLES-Linux-kernel-only OES, but it retained the OES-NetWare operating system option, as NetWare 6.5 SP7 can run as a paravirtualized guest inside the Xen hypervisor. The SLES base of the OES 2 was later updated to SLES 10 SP1.

Features introduced in OES 2 include:

See also (based on different OES editions):

OES 11

OES 11 was released on 12 December 2011 based on SLES 11 SP1 64-bit. The NetWare Kernel was removed after OES 2. This is the first version of OES to be 64-bit (x86_64) only. NetWare 6.5 SP8 was still possible to run as a 32-bit only para-virtualized guest inside the Xen hypervisor.

OES 2015

OES 2018 & 2023

Micro Focus released OES 2018 in November 2017, with three service releases (the last being OES 2018 SP3 in July 2021). All releases were all based on SLES 12 and its service packs.

While SUSE was sold by Micro Focus in 2018, SLES support and updates are included with an OES installation, provided at least one OES component is installed.

OES 2023 was released in October 2022, using a base of SLES 15 SP4. It includes a new Unified Management Console (UMC) to supersede iManager for server management, TLS 1.3 support and was bundled with NetIQ eDirectory 9.2.7. Breaking with previous convention, OES 23.4 (rather than SP1) was released in October 2023, and was rebranded to OpenText, after their purchase of Micro Focus earlier in the year. General support was extended to 3 years from the usual 2 years of previous releases.

Release summary

End-of-support schedule

OES version Release date General Ends
Old version, no longer maintained: 1 25 March 2005 31 July 2009
Old version, no longer maintained: 2 12 October 2007 31 July 2013
Old version, no longer maintained: 11 12 December 2011 13 June 2017
Old version, no longer maintained: 2015 31 August 2015 31 December 2019
Old version, no longer maintained: 2018 28 November 2017 7 February 2020
Old version, no longer maintained: 2018 SP1 7 February 2019 31 May 2021
Old version, no longer maintained: 2018 SP2 5 May 2020 31 Oct 2022
Older version, yet still maintained: 2018 SP3 15 Jul 2021 31 Jan 2024
Older version, yet still maintained: 2023 13 Oct 2022 31 Oct 2024
Current stable version: 23.3 26 Oct 2023 30 Nov 2026
Legend:Old versionOlder version, still maintainedLatest versionLatest preview versionFuture release


See also


  1. ^ Emerson Process Management (October 31, 2023). "OpenEnterpriseTM SCADA Suite" (PDF). Emerson. Archived (PDF) from the original on October 31, 2023. Retrieved October 31, 2023.
  2. ^ a b c Prickett Morgan, Timothy (13 December 2011). "NetWare-Linux Love Child Turned Up to 11". The Register. Retrieved 2017-02-07.
  3. ^ Rouse, Margaret (December 21, 2011). "Open Enterprise Server". Techopedia. Archived from the original on August 10, 2023. Retrieved October 31, 2023.
  4. ^ Hewlett Packard Enterprise (October 21, 2005). "Open Enterprise Server (OES)" (PDF). Hewlett Packard Enterprise (Imbedded PDF). Archived from the original on July 17, 2022. Retrieved October 31, 2023.
  5. ^ "Upgrading to OES2: Planning & Implementation Guide".
  6. ^ "OpenEnterprise™ SCADA Systems | Emerson US". Retrieved 2023-10-31.
  7. ^ a b "Manage File & Print Networks - Open Enterprise Server". Novell Web site. Retrieved 20 November 2015.
  8. ^ "OES 2015 Readme" (PDF). Retrieved 16 December 2023.
  9. ^ Burton, Graham (2 July 2018). "Micro Focus to sell SUSE Linux to private equity firm for US$2.5bn". Computing. Retrieved 29 August 2018.
  10. ^ "What's New or Changed in OES 2023". Retrieved 16 December 2023.
  11. ^ "What's New or Changed in OES 23.4". Retrieved 16 December 2023.
  12. ^ "SLES support entitlement with OWS products". Retrieved 16 December 2023.
  13. ^ a b c d e "Novell Product Support Lifecycle".
  14. ^ Product Support Lifecycle
  15. ^ Harris, Jeffrey (2005). Novell Open Enterprise Server Administrator's Handbook, NetWare Edition. Novell Press. Pearson Education. ISBN 9780672332784. Retrieved 2015-02-15. Automatic Client Upgrade Although the Client Upgrade Agent has largely replaced this functionality, Novell still offers the ACU feature to automate the upgrade of multiple existing workstations to the latest Novell client.

Further reading

External links