Compaq hard disk drives undergo an intense qualification process that eliminates data integrity problemsfirmware and O/S incompatibilities and other causes of data corruption or premature failure. Compaq hard disk drives are specifically designed and tested for flawless operation in your equipment. Supply your server workstation or notebook with a Compaq hard disk drive and you will prevent incompatibilities that can rob your system of performance or cause you to lose valuable data. This HDD is designed for any Ultra 320 Ultra3 or Ultra2 capable ProLiant Servers ProLiant Storage Systems AlphaServers and StorageWorks HP enclosures.