P4621ARetail Box, Hot swap Drive assembly to add to or directly replace a failed HP P4621A, P4621-63001 and P4621-69001. Our drive is twice the capacity of the original and uses the same amount of Power (compared to the original) 9.5W, state-of-the-art design, new manufacture (not old stock) and higher reliablility. NOT BULK Package, NOT Refurb like others. This 146GB state-of-the-art design has a 8MB Cache and a Ultra320, Ultra3 and Ultra2 interface compatable with HP TC 3100 and 4100 Netservers Only. Formatted Capacity: 146.0GB Interface Type: 80-pin Ultra 3 and Ultra 320 SCSI Formatted Internal Transfer Rate (Min.): 132MB/sec Formatted Internal Transfer Rate (Max.): 132MB/sec External I/O Transfer Rate (Max.): 320MB/sec Average Seek Time Read: 4.5ms typical Default Buffer: 8MB Spindle Speed: 10000 RPM MTBF: 1,200,000 hours S.M.A.R.T. Support: Yes Warranty: 3-year Availability: Usually ships in 2-3 business days. P4621AoX$388.45