1TB hard drives compared

We seem to have established a tradition of writing an article about 1-terabyte hard disk drives each ten months or so. In the first roundup, written almost two years ago, we just acquainted you with such products because that was the peak storage capacity available then and only few makers had reached it with three platters. Other manufacturers needed four or even five platters for that. About one year ago, we published another roundup in which most of the HDDs were based on three platters only, and this factor had a positive effect on their sequential speeds. And now we are ready to give you one more snapshot of the 1-terabyte sector of the HDD market.