OpenVMS.
When downtime is not an option.

Despite many claims to the contrary, OpenVMS is alive, kicking and being used for business critical operations by many of the world's most successful organisations. Healthcare, Telecomms, Finance, Defence, Manufacturing and many others.
Why? Because HP OpenVMS is the most secure and robust general purpose computing platform on the planet. For many years OpenVMS has had out-of-the-box integrated support for configurations ranging from the desktop to disaster tolerant multi-site data-centres without need for bolt-on extras. It also has a bright future, with continuing development of features that may sometime in the future appear in some unix variants, and maybe even in Microsoft Windows.
Further, OpenVMS is no-longer tied to expensive proprietary hardware, with the release of the second production quality version to fully support Intel Itanium architecture platforms.

IT support
We offer technical support and consultancy services to OpenVMS users, most of whom consider their IT infrastructure to be critical to their business.

Despite being both virus immune, hackerproof and having the best reliability record in the industry, problems do occasionally arise. Whatever some may claim, no computer system in existence is totally free of flaws, not even OpenVMS. Unlike most other operating systems, OpenVMS has been written to include very extensive system and data integrity checking. This allows both the detection of any inconsistency that may occur, and remedial action to be taken as the situation dictates. Occasionally this means preserving the evidence and forcing a reboot to restore OpenVMS to a known good state.

JomaTech has aquired massive expertise in OpenVMS crash analysis, and for a moderate fee can help solve this or any other problem you might occasionally encounter.