Main Features • Hard drive • 36.4 GB • internal • 3.5" • Ultra320 SCSI • 15000 rpm • buffer: 8 MB High performance and reliability - these attributes define hard disk drives from IBM - a winning data storage solution. Designed specifically to meet the needs of your advanced, data-intensive applications, IBM hard disk drives provide users with a wide range of capacities and interfaces for nearly every data-intensive application.