From: Gunther Schadow <gunther(a)aurora.regenstrief.org> Ultrix was not nearly as well developed as VMS for multiple CPU and cluster configs. Available user performance on a 6k system with decent disks was very high under VMS but under ultrix is was a less appealing system. I'd used an identical pair while at DEC with both ultrix and VMS and the ultrix system was a bit doggy even at lighter user loads (no one liked it). Comparing it to a 486... no contest with a pot load of users. the i486 does not have the system robustness and IO capability. Allison