P3577A P3577-63003 Don't trust your data on just any disk. Our disks are highly tested, Retail Box, Hot swap Drive assemblies, to add to or directly replace a failed HP P3577A Hot Swap Drive. Our drives are Very Low Power, faster, state-of-the-art design, of new manufacture (not old stock, not refurbs, not 90 day units, not bulk packaged like the other sellers) This drive is more reliable than the original. Uses Only 12 watts! 73GB 10,000RPM Hot Swap Drive for all HP Netservers with low profile hot swap bays. P3577-63003 original Replacement Part Number P3577-69003 original Exchange Part number 15,000 RPM, 146GB and 300GB upgrades now available! Formatted Capacity: 73.5GB Interface Type: 80-pin Ultra160/3/2 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 15,000 RPM Option, Only 9 Watts!Completely Compatible Availability: Usually ships the next business day. P3577A$298.45But WAIT! 146GB, 300GB & 15,000RPM Upgrades are Available Upgrades: None, STD P3577Ao 73GB 10,000RPMP3577Aoi 73GB 15,000RPM(+250)P3577AoX 146GB 10,000RPM(+250)P3577AoXi 146GB 15,000RPM(+689)P3577AoX2 300GB 10,000RPM(+669)