DEC HSC90 Cluster Controller
This HSC90 Hierarchical Storage Controller was the interface between the VAX-8650, VAX-7000, VAX-6000/410, VAX-6000/510, and the cabinet full of RA90 disk drives. The cluster controller and the VAXen are all connected to a SC008 Star Coupler with COAX cables. The Star Coupler is in the paper bag.
The HSC90 was conneected to a rack containing 8x RA92 disks and to a Fujitsu tape drive.