Is it possible to restore a backup for a site taken on one Plesk server (Server1)to a different Plesk server (Server2) if both servers are under the same network? Will a site still work on Server1?
It is possible because backup restoration does not interfere with DNS resolution. If Server1 and Server2 are under the same network but have different private IP addresses, domain will still resolve to Server1, unless network settings are changed.
For additional information about how domain resolution works inside a network, contact network administrator.