ROCC R2840 systems

Anyone know what these are? Just been offered a couple of processor boxes with cache streamers, front-loading reel tape drives with vacuum load, and some sort of disk units ("platters the size of dinner plates" I was quoted) + terminals, printers, cabling etc. I'm awaiting photos, thought I'd ask in the meantime though. I assumed at first (from the mention of the size of things and the age) that it was "just" rebranded DEC stuff, but I could be wrong. Google didn't seem to have anything useful to say on 'ROCC' though, other than a modern systems company who could well have been around in the 70's selling rebadged equipment I suppose... Sounds like stuff that should be saved anyway, so reserve space in those garages now :-) cheers, Jules