The high performance and reliability requirements of server and workstation environments mean that selecting the right drives for your system is critical. Compaq has developed one of the most rigorous programs for qualification, continuous testing, and integration in the industry to ensure that storage customers get the best drives available. Compaq drives undergo an intense qualification process that eliminates data integrity problems, firmware and O/S incompatibilities, and other causes of data corruption or premature failure. Only those drives whose performance is suitable for a server or workstation environment are selected through Compaqs qualification process and are "best in class." 18GB, 7.2k rpm, Ultra3 SCSI (Ultra 40/m) 80-pin SCA 3.5" internal hard drive for select Compaq ProLiant servers.