This is a really slow drive or controller. Consumer grade 3.5 inch 2TB drives typically can handle 100MB/s. I would suspect in the absence of real information that your controller is more likely to be deficient than your drive. If this is on a laptop or something, then I withdraw my thought.
On Tue, Jan 25, 2011 at 4:50 PM, Da Zheng <zhengda1...@gmail.com> wrote: > The aggregate write-rate can get much higher if you use more drives, but a >> single stream throughput is limited to the speed of one disk spindle. >> >> You are right. I measure the performance of the hard drive. It seems the > bottleneck is the hard drive, but the hard drive is a little too slow. The > average writing rate is 50MB/s.