WD covers the drive with a generous five-year warranty, though, which should be enough for most users. The drive can be loud, and it can run hot. It achieves this incredible seek time thanks to a new dual-stage actuator that combines a fast course movement with a finer precision stage that completes the seeking. In testing (using HDTach) we saw an average read and write performance of 113.1MB/s and a random access time of 11.3ms. Western Digital has crammed 2TB of storage into the Caviar Black by using four 500GB platters spinning at 7,200rpm. It isn't quite SSD level fast, but compared to your average hard drive it has a serious turn of speed. It does, however, pack an incredible punch in the performance stakes thanks in part to a huge 64MB cache and two-stage actuator to make seek times speedy.
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