Overview Sia is a decentralized, peer-to-peer network for buying and selling computer storage space. If you have extra storage space, Sia allows you to sell it to others who want to store their files on the Sia cloud network. Hosting a Sia server on your personal laptop or desktop can be challenging. People typically turn off their personal machines at times, or at least reboot them on a regular basis. This present a problem for an application like Sia, as it needs to maintain high availability to serve clients on the network.