Here at IIS we have been operating a HP3000 959/200 for a year and a 969/200 for three months with no known allocation or low level CPU problems. The only pieces replaced were the DDS-2 dat drive on the 959 (a number of times) and the multi-function I/O card on the 969. I think the only time the 969 has been down was to replace the I/O card, can't even remember nary a system crash. I'd call that RELIABLE and nearly problem free. A few words of advice - buy, Buy, BUy, BUY.