The Hitachi D-W450 is a computer hard disk drive (HDD) that was introduced in 2002. Its capacity was 45 GB, making it one of the largest hard drives at the time. It operated at 7200 RPM and had a SATA interface, which was a newer and faster interface compared to the traditional ATA interface. The Hitachi D-W450 was part of Hitachi's Deskstar series, which aimed to provide high performance and reliability for desktop and workstation computers. Its design and features were suited for users requiring large storage capacities for demanding applications or multimedia content.