Key technical specifications (combined range)
form factor: 3.5-inch internal
interface: sata 6gb/s (backwards compatible to 3gb/s)
capacity options: 500gb, 2tb, 4tb
rotational speed: 7200 rpm (typical desktop/some surveillance), 5900 rpm (typical capacity/surveillance)
cache: 16mb/32mb/64mb/128mb/256mb (model dependent)
recording technology: conventional magnetic recording (cmr) for skyhawk, smr/cmr for barracuda
data transfer rate: up to 220 mb/s (sustained)
1. seagate desktop hdd (barracuda) - general computing
designed for home/office pcs, gaming, and basic backups.
specification 500gb (desktop) 2tb (desktop) 4tb (desktop)
model number st500dm009 st2000dm008 st4000dm004
rpm 7200 rpm 7200 rpm 5400/5900 rpm
cache 32mb / 64mb 256mb 256mb
max sustained transfer ~210 mb/s ~220 mb/s ~190 mb/s