Seagate SMR (Shingled Magnetic Recording) Technology Increases Drive Capacity. Shingled drives cram more tracks onto a single platter and reduce the minuscule space between tracks. You can fit over a terabyte on one spinning HDD platter. Seagate’s new drives can store eight terabytes of data for about 3 cents a gigabyte.
But they are not fast, it’s only 5,900 RPM and an average read/write speed is 150MB/sec. But these drives work best combined with fast SSD drives on the front end and then these slower drives for less important storage.