HGST used SAS HDD 0B26014, 900GB, 10K, 2.5", 64MB..
SEAGATE used SAS HDD ST900MM0006, 900GB, 6G, 10K, 2.5"..
DELL used SAS HDD W348KB, 600GB, 15K PRM, 6Gb/s, 3.5", με tray..