The NAS' "sync" function is likely named after the Unix command "sync", which synchronizes the kernel's block cache to the storage medium. The traditional solu

The NAS' "sync" function is likely named after the Unix command "sync", which synchronizes the kernel's block cache to the storage medium. The traditional solution here would be to configure the NAS as an NFS server, and mount home directories on all other machines over the network. While it's not required, it's sortof nicer to have user accounts and groups synchronized as well: this used to use NIS (aka Yellow Pages, or UP, or later NIS+), but these days LDAP is the usual solution. If you only have a small number of users/groups, then you can rely on just manually updating all the clients if you prefer.