Killer speed SATA 6 Gb/s interface and 32 MB cache enhance the next generation 10,000 RPM WD VelociRaptor making it 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. IcePack mounting frame The 2.5-inch WD VelociRaptor is enclosed in a backplane-ready 3.5-inch enterprise-class mounting frame with a built-in heat sink that keeps this powerful little drive extra cool when installed in high-performance desktop chassis. 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.