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.Primary InformationHard Drive Type : Hot-swap Form Factor : 3.5" x 1/3H Hard Drive Capacity : 72.8 GB Hard Drive Interface Type : SCSI Hard Drive / Average Seek Time : 3.8 Ms Hard Drive Spindle Speed : 15000 Rpm Width : 4 Inch Height : 1 Inch PC Compatibility : PC Hard DriveStorage Controller Type : Ultra320 SCSI Hard Drive / Data Transfer Rate : 320 MBps Special FeatureCOO : SingaporePhilippinesUnited States TAA : Yes UNSPSC CodeUNSPSC Code : 43201803 Product IDUPC: 613326447871Manufacturer Part: 286778-B22