SDF was made up of four machines using RFS (Remote File Sharing) over
STARLAN-1 along with ETHERNET for external network connectivity. What is
not shown are the DM (Disk Module), the 3B2/310 and the modems (we used
two Telebit TrailBlazer+ 19.2KBPS PEP modems for our UUCP connections).
This is a Symbolics 3640 (known as 'norway'), to the right of that is a
Tektronix 4125 with 2 3B2/310s that were used for SDF in 1993.