The HP 638521-001-SC 638521-001 2Tb 7.2K 6G Lff Sas Sc Hdd is in in stock at Calhoun Technologies. For over 10 years Calhoun Technologies has been saving companies likes your up to 80% off list price on hard to find computer hardware. Manufacturer: HP Part Number: 638521-001-SC Details: HP 638521-001-SC 638521-001 2Tb 7.2K 6G Lff Sas Sc Hdd