WD VelociRaptor drives offer an ultra-fast 32 MB cache and SATA 6 Gb/s interface and twice the capacity of previous generations. With low power consumption and cool operation these 2.5-inch drives are perfect for blade servers, workstations, and low-end servers. The next generation 10,000 RPM WD VelociRaptor making is up to 15% faster than the award-winning previous generation. Monstrous capacity - WD VelociRaptor SATA drives are available in capacities up to 600 GB, double the capacity of the previous generation. Rock-solid reliability - Designed and manufactured to mission-critical enterprise-class standards to provide enterprise reliability in high duty cycle environments. With 1.4 million hours MTBF, these drives have the highest available reliability rating on a high capacity SATA drive. Ultra-cool operation - Consumes less idle power and uses similar active power as the previous generation WD VelociRaptor, while offering double the capacity and higher performance. Rotary Acceleration Feed Forward (RAFF) - Optimizes operation and performance when the drives are used in vibration-prone, multi-drive chassis. NoTouch ramp load technology - The recording head never touches the disk media ensuring significantly less wear to the recording head and media as well as better drive protection in transit. Environmentally conscious - In addition to being ROHS compliant, this generation of WD VelociRaptor is also a halogen-free design.