Microsoft's Remote Desktop Connection is included with the pricier versions of Windows and works like a charm. You might need to configure your router and LAN on your own if you want access from outside your local network, i.e., when you're on the road.
VNC Connect offers the speed of direct connections, as well as portal-based management for only a few bucks per computer. It's not dead easy to set up, but it offers the broadest native operating system support in the industry.
Seagate's IronWolf 110 SSD is designed for NAS, but can also be used in PCs. Thanks to very good performance, a high durability rating, and surprisingly low premium, you might just want to do that. Being available in capacities up to 3.82 TB doesn't hurt either.