The Retro-Computing Society of RI caption for this photo:
Three 178MB RPO6 removable-pack disk drives and one
508MB fixed disk drive. A disk pack can be seen on top of the fourth
cabinet; these four cabinets are 10 feet wide.
Next is a 9-track tape drive. The four blue-trimmed cabinets contain
two more pdp-11/34 based communications processors and related
interfaces. These five cabinet are 11 feet wide.