As I said in the thread yesterday, it's an IBM SSA
disk connector. It's
IBM's pre-fiberchannel "fiberchannel" - a serial link to connect a
string of disks to a controller. They made MCA and PCI adapters for
RS/6000s,
Could this possibly been a drive in an IBM
RAID-via-HIPPI system back in 1994?
The IBM started with a Maxim Strategy
array, then moved to it's own for the PVS
(Power Visualization System) product.
John A.