Travelstar 7k1000 is the second generation 9mm, 7200 rpm 2.5-inch hard drive from hgst, with capacities ranging from 250GB to 1 TB leveraging advanced format, which increases the physical sector size from 512 bytes to 4,096 (4k) bytes to improve drive capacities and error correction capabilities. Travelstar z7k1000 is the first 2.5-inch HDD with a 6gb/s sata interface and 32mb of cache and delivers the highest 7200 rpm performance in pcmark vantage testing. The 500GB per platter, one-disk models are designed as a direct replacement for standard 9.5mm hdds, for use in notebook pcs, external storage and gaming consoles, as well as new, thinner and more robust device designs.