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SJ Research Nexus Disc Sharer

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SJResearch Nexus Disc sharer front

SJ Research Nexus Disc Sharer (front)

SJResearch Nexus Disc Sharer back

SJ Research Nexus Disc Sharer (back)

SJResearch Nexus Disc Sharer bottom

SJ Research Nexus Disc Sharer (bottom)

SJResearch Nexus Disc Sharer open

SJ Research Nexus Disc Sharer Open

SJResearch Nexus Disc Sharer circuit board

SJ Research Nexus Disc Sharer circuit board

SJResearch Nexus disc sharer expander board top

SJ Research Nexus Disc Sharer expander board (top)

SJResearch Nexus Disc Sharer expander board back

SJ Research Nexus Hard Sharer expander board (back)

SJResearch Nexus disc sharer expander board bottom

SJ Research Nexus Disc Sharer expander board (bottom)

The Nexus Disc Sharer is at the heart of a Nexus network. The basic Disc Sharer has 4 ports and up to two expander boards can be add to give a total of 6 or 8 ports. The disc being shared is a 170MB Quantum Prodrive ELS. The Inmos IMST225-J25S processor controlls the communincations, there is one on the circuit board and one on the expander board. The ROM is labelled Krystal 2.07 Serial B0609 931123 1F24.

Here is a brochure describing the SJ Research Nexus Shared Hard Disc.
Here is the Nexus Disc Server Manual (4M).
Here is the Nexus Utility Software (22 Oct 1992)