Unisys OS 2200

The Defense Information Systems Agency (DISA) is seeking qualified vendors to provide follow-on Unisys OS 2200 operating system support and services through a single award, indefinite delivery/indefinite quantity contract. The procurement encompasses Unisys OS 2200 operating systems, software updates, third-party software support, and 24/7/365 technical support across ten DISA Host and Computer Center locations domestically and overseas. Key requirements include demonstrated experience maintaining Unisys OS 2200 environments with proven ability to achieve 99.95% or higher system availability, the capability to operate in both unclassified and classified environments, comprehensive supply chain risk management, and priority-based response timelines for technical support. Vendors must possess a Secret-level facility clearance with all personnel being U.S. citizens holding appropriate security clearances. Interested parties must submit responses of no more than five pages addressing required capabilities to adam.m.venhaus.civ@mail.mil by 4:00 PM EDT on March 16, 2026, with submissions to include business information, representative contact details, CAGE code, and existing prime contract vehicles.

This procurement is not designated as a set-aside, though small businesses, Small Disadvantaged Businesses, 8(a) certified firms, Service-Disabled Veteran-Owned Small Businesses, HUBZone businesses, and Woman-Owned Small Businesses are encouraged to respond. The current incumbent contractor is SAIC (large business), which held the contract from December 2022 through November 2026 under sole source acquisition. The estimated contract value is $34 million, which represents the size standard threshold applicable to NAICS code 541519. The anticipated contract structure includes a one-year base period with four one-year renewal options, totaling five years of potential performance. The contract will support critical mission partner operations across eight continental U.S. locations (Columbus, Denver, Fort Meade, Mechanicsburg, Montgomery, Ogden, Oklahoma City, and San Antonio) and two overseas locations (Stuttgart and Bahrain), with potential expansion to additional sites through bilateral modification.