First of all, whether you want to use a network with disk or without disk, I suggest you use a network without disk, and it doesn't cost much to set up your own server. It is best to use a router. Machine configuration. 5000+, 2G memory, graphics card without fan, 5 12M is enough. Gigabit switches and network cards (100 m is ok if diskless is not needed), and the management software depends. Because some local public security bureaus and cultural management are strict, they may use the software they provide. If not, that would be great. Chimonobambusa bambusa or something.