S-disk On pc’s managed by C&CZ the S-disk (a network share) is available by default. On this share a large number of programs is available that can be run directly form this share (no local installation needed). These programs can also be used on pc’s not managed by C&CZ. Attach the network share as \\software-srv.science.ru.nl\software using Drive letter S because some software might depend on the driveletter S.