The DECsystem (or DECSYSTEM) name was also used for later models of the PDP-10 mainframe, namely the DECsystem-10 and DECSYSTEM-20 series.
When access to the particular MIT computer was removed in 1983, fellow CP/M enthusiast Frank Wancho, then an employee at the White Sands Missile Range, arranged for the archive to be hosted on a DECSYSTEM-20 computer with ARPANET access, accessible via FTP at simtel20.arpa, later known as wsmr-simtel20.army.mil.