Seagate announced three new consumer-level hard drives today, which it claims are the “industry’s first 1.5-terabyte desktop and half-terabyte notebook hard drives.” The company claims that it is able to greatly increase the areal density of its drive substrates by utilizing perpendicular magnetic recording (PMR) technology. Wikipedia states that PMR is “capable of delivering more than triple the storage density of traditional longitudinal recording.”Credit: WikipediaSeagate’s latest desktop-class hard drive,