was actually quite interesting, since it mixed type I waveform protections with type II ciphering.
not as interesting but very nostalgic is the picture that shows a workgroup supported by a “300 MByte” file server.
2015-0133.pdf (via cryptome’s site)
Which is less than the store on your phone, full of your photos probably!
ok ok, neither the XT nor the fileserver was never used for cryptanalytical jobs – even though the first Manchester computer (built 1946), with drum memory for storing colossus tape – had less io than the XT + 4Mbps ethernet.