Your One Stop HP NonStop Tandem Spare Parts Solution! Frontier Computer Corp is leading 3rd Party HP NonStop Tandem Server Reseller, Maintenance and Professional Services provider and sells fully tested NonStop K and S series equipment. We offer comprehensive and competitively priced hardware maintenance, professional services to include training any legacy NonStop environments. Our consistent track record in performance, reliability, and professionalism makes Frontier Computer Corp an industry leader. We are certain that our expert field engineers, central dispatch, complete spare parts inventory, up-to-date repair and testing facilities, and dedication to achieving customer satisfaction makes us the most viable hardware reseller and maintenance provider for your organization.