Western Digital Ultrastar C15K600 300GB internal hard drive 15000 RPM 128 MB 2.5" SAS

Mission-critical Performance – 15,000 RPM for faster data access
Best-in-class Power Management – Enables industry-leading power efficiency
Enterprise-class Protection – Multiple security and data encryption options

When you need superior performance in a small form factor for mission-critical applications, trust the Ultrastar® C15K600 in your high performance computing (HPC) environment. Spinning at 15K RPM, this drive really performs; it delivers more than 38% faster sequential and 2.5X faster random write performance. We've also included a broad range of security and encryption features to protect your data. To maximize performance and valuable floor space, trust the HGST Ultrastar® C15K600.