If the problem is that they can't get disks or drives, you can buy an "industrial" 5.25 inch USB emulator for $250. If the problem is that the system is just t

If the problem is that they can't get disks or drives, you can buy an "industrial" 5.25 inch USB emulator for $250. If the problem is that the system is just that old, and that's the only criticism, that sounds like it's a near-perfect-for-the-job system that's firmly at the bottom of the bathtub curve¹. Electronics of the era can plausibly continue almost indefinitely: plenty of industrial and aeronautical equipment does, as well as things like the tank-like HP printers. ¹: if it's coming up the other side of the bathtub and failures across the system are accelerating, then they should watch out.