P2507ADon'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 P2507A and P2507-69001. Our drive is Very Low Power (compared to the original), new manufacture (not old stock). ). This drive is more reliable than the original. NOT BULK Package, NOT Refurb like others. This 18.4GB 15,000RPM state-of-the-art design Hot Swap Drive has a 4MB Cache and a Ultra320, 160, Ultra3 and Ultra2 interface compatable with LP series Netservers. Formatted Capacity: 18.35GB Interface Type: 80-pin Ultra 3 and Ultra 320 SCSI Formatted Internal Transfer Rate (Min.): 147MB/sec Formatted Internal Transfer Rate (Max.): 147MB/sec External I/O Transfer Rate (Max.): 320MB/sec Average Seek Time Read: 3.6ms typical Default Buffer: 8MB Spindle Speed: 15000 RPM MTBF: 1,200,000 hours S.M.A.R.T. Support: Yes Warranty: 3-year The 18GB 10,000 RPM Drive is no longer in manufacture therefore our inventory of 3 year warranty parts in running low. 36gb drives may be substituted for 18GB. You may consider ordering the 36GB P4620A for the same price, twice the capacity and a 3 yr. warranty. A 36GB can even replace an 18GB in an existing RAID configuration! OR consider the 36GB 15,000RPM drive, 30% Increase in speed! Availability: Usually ships the next business day. P2507Ao$248.45 Options: None36GB_15K(+250)72GB_15K(+440)146GB_15K(+712)