HP 781516-S21 600GB 10K SFF Enterprise 12G Smart Hard DriveHP 600GB 12G SAS 10K SFF (2. 5 inch) SC Enterprise Hard Drive Model Number EG0600JEMCV, EG0600JEHMA, EG0600JETKA Spare # 739712 001, 846292 001, 781577 001, 836791 001 Option PN 739461 B21, 846267 B21, 846267 S21, 781516 B21, 781516 S21, 836628 B21 GPN 872483 004 SmartBuy Part 739461 S21 ASSY PN 768788 002, 781514 001, 796365 002, 781581 002 Drive Model ST600MM0208 HP Certified Disks For Servers G8 G9 & G10 HP Certified Disks with a 2 year warranty