Western Digital Ultrastar C10K1800 900GB internal hard drive 10520 RPM 128 MB 2.5" SAS

Best-in-class Performance – 2.5X faster random write than prior generation 10K HDDs
Best-in-class Capacity – Advanced Format models deliver up to 1.8TB
Enterprise-class Protection – Multiple security and data encryption options

When you need to access to a lot of data, fast -- count on the compact, high-performance Ultrastar® C10K1800 enterprise-class HDD. Delivering up to 1.8TB of capacity, the drive helps you manage data growth in a smaller footprint. Innovations in performance give you the speed you are looking for: 12Gb/s SAS interface delivers high transfer rates between host and drive. Non-volatile media cache accelerates write performance even at high workloads and helps improve reliability and data integrity during unexpected power loss. With a 2M hour MTBF reliability rating and a 5-year warranty, you can trust your mission critical data to the high-performance Ultrastar C10K1800.