It's been a long time coming, but Seagate's finally unveiled its first 2TB hard drive, the 3.5-inch Constellation ES. The hefty spinner also comes in 500GB and 1TB varieties and runs at 7,200RPM, which should make it a bit faster than Western Digital's behemoth, according to reviews for the latter. It'll be out calendar Q3, which we take to be fancy schmancy business talk for "this Summer." Meanwhile, the 2.5-inch ES-less Constellation line sports 3 Gbps SATA and SAS 2.0 interface. Look for this one in 160GB
