ust last week we showed the Seagate Constellation.2 1TB SATA drive. The new Constellation.2 proved to be a worthy successor to the popular Constellation Series and it outperforms the first generation drive by a significant margin. Seagate also managed to double the capacity of the series while keeping the price of the new drives in line with the old offerings. With the SATA version already under our belt, it is time to focus on the Constellation.2 SAS model. Since most of these drives are configured in RAID arrays, we were given the opportunity to test the new Constellation.2 1TB SAS (Model Number ST91000640SS) in a couple of three drive RAID configurations. Most users will be building three to five drive RAID 5 arrays in their servers with these drives, so we will do the same. For the performance crowd we will also toss in a three drive RAID 0 array to see just how much performance we can pull from this set of drives. Before we get too far ahead of ourselves, let's take a look at the specifications for the new Constellation.2 SAS drive.