D9419ADon't trust your data to those bargain stores old stock, 1999, refurb drives. Buy the best from an Original HP Manufacture producing the level of product quality and service that HP sold to you. e4ServicesInc.com drives undergo the intense qualification process HP required that eliminates data integrity problems, firmware and O/S incompatibilities, and other causes of data corruption or premature failure. Our disks are highly tested, Retail Box, Hot swap Drive assemblies, to add to or directly replace a failed HP D9419A Hot Swap Drive. Our drive is Very Low Power (compared to the original), state-of-the-art design, new manufacture (not old stock) and higher reliability. NOT BULK PACKAGE like others. This 36.4GB 10,000RPM Low Profile (1") Hot Swap Drive has a 8MB Cache and a Ultra320, Ultra160 Ultra3 and Ultra2 interface compatible with all HP Netservers with low profile hot swap shelves D9419-63002 original Replacement Part Number D9419-69002 original Exchange Part number Formatted Capacity: 36.7GB Interface Type: 80-pin Ultra320 SCSI Formatted Internal Transfer Rate (Min.): 62MB/sec Formatted Internal Transfer Rate (Max.): 107MB/sec External I/O Transfer Rate (Max.): 320MB/sec Average Seek Time Read: 4.5ms typical Default Buffer: 8MB Spindle Speed: 10025 RPM MTBF: 1,200,000 hours S.M.A.R.T. Support: Yes Warranty: 3-year Also available with 36GB 15k Option!, Other Options16MB cache , 72GB and 141GB Versions! Completely Compatible Availability: Usually ships the next business day. D9419A$268.45 Upgrades:: None15,000RPM(+138)72GB_10K(+210)72GB_15K(+450)146GB_10K(+470)146GB_15K(+998)300GB_10K(+988)