AI data center procurement often concentrates on equipment specifications, delivery schedules, warranties and installation costs. However, one operational question deserves equal attention: what happens when the original manufacturer stops supporting a critical component? A power distribution system, cooling unit or control platform might continue operating after routine servicing ends, but that does not guarantee long-term reliability. Replacement components may become difficult to source, firmware updates may stop arriving, and access to specialist technical assistance may become limited. These changes rarely create an immediate operational failure, making them difficult to recognize during procurement and early operations. Buyers therefore need to understand how long each critical asset can remain maintainable without its original manufacturer’s assistance.