Hewlett Packard 395473-B21 (500 GB)$110.00 to $605.00
 
  
  Hard Drive Spindle Speed - 7200Rpm Hard Drive Type - Hot-swap Hard Drive Capacity - 500GB Hard Drive Interface Type - Serial ATA Form Factor - 3.5''
 
  	Manufacturer:Hewlett Packard		 Product MPN   MPN | 395473-B21 | Key Features   Capacity | 500 GB |  Interface | Serial ATA | Enclosure    | Internal | Spindle Speed    | 7200 RPM | Technical Features  External Data Transfer Rate    | 150 MBps |  Average Latency | 4.17 ms | Interface (Detailed)    | Serial ATA |  Hot Swap | Yes | Other Features  Platform    | PC |  Package Qty. | 1 | Warranty   Warranty | 1 Year | Miscellaneous   UPC | 882780029781 |  
 
 Tags:hewlett, packard, 395473-b21, 500, gb, 
  
 | Hewlett Packard PY278AA (250 GB)$75.00 to $246.00
 
  
  The Hewlett Packard (PY278AA) 250 GB SATA II Hard Drive is fully compatible with PC systems.The Hard Drive connect by: Serial ATA II for Internal utilization. Spinning up to 7200 RPM and offering capacity as large as 250 GB
 
  	Manufacturer:Hewlett Packard		 Product MPN   MPN | PY278AA | Key Features  Designation    | Desktop Computer |  Capacity | 250 GB |  Interface | Serial ATA | Enclosure    | Internal | HDD Form Factor    | 3.5" x 1/3H (Low Profile) | Spindle Speed    | 7200 RPM | Technical Features   Special Features | S.M.A.R.T Technology | External Data Transfer Rate    | 300 MBps | Seek Time    | 8.5 ms |  Buffer Size | 8 MB |  Average Latency | 4.17 ms | Interface (Detailed)    | Serial ATA II | Other Features  Platform    | PC |  Package Qty. | 1 | Dimensions   Height | 1 in. |  Width | 4 in. | Warranty   Warranty | 1 Year | Miscellaneous   UPC | 829160881478 |  
 
 Tags:hewlett, packard, py278aa, 250, gb, 
  
 | IBM 90P1305 (73 GB)$31.00 to $140.00
 
  
  Double your throughput in select IBM eServer xSeries servers with the next generation of high-speed Ultra320 SCSI hard disk drives (HDDs), now with the new Ultra-Slim tray form factor. Ultra320 SCSI drives provide top-of-the-line performance for business-critical, disk-intensive applications such as e-business, transaction processing, data mining and data warehousing. Ultra320 SCSI technology combines interface data transfer rates of up to 320MBps, reduced overhead and enhanced flow control to help deliver dramatic performance gains. Improved diagnostics and data protection, as well as hot-swap capabilities with direct docking, help reduce downtime. For even greater reliability, you can create high-performance RAID arrays. Simply connect your drives to either an onboard Ultra320 SCSI controller with integrated mirroring capabilities or an IBM ServeRAID-5i Controller, available on select xSeries servers.Minimize
 
  	Manufacturer:IBM		 Product MPN   MPN | 90P1305 | Key Features  Designation    | Desktop Computer |  Capacity | 73 GB |  Interface | SCSI | Enclosure    | Internal | HDD Form Factor    | 3.5" Slim Line | Spindle Speed    | 10000 RPM | Technical Features  Internal Data Transfer Rate    | 624 Mbit/s | External Data Transfer Rate    | 320 MBps | Seek Time    | 4.7 ms |  Buffer Size | 8 MB |  Average Latency | 3 ms | Interface (Detailed)    | SCSI Ultra320 |  Hot Swap | Yes | Other Features  Platform    | PC |  Package Qty. | 1 | Warranty   Warranty | 1 Year | Miscellaneous   UPC | 000435260888 |  
 
 Tags:ibm, 90p1305, 73, gb, 
  
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Double your throughput in select IBM eServer xSeries servers with the next generation of high-speed Ultra320 SCSI hard disk drives (HDDs), now with the new Ultra-Slim tray form factor. Ultra320 SCSI drives provide top-of-the-line performance for business-critical, disk-intensive applications such as e-business, transaction processing, data mining and data warehousing. Ultra320 SCSI technology combines interface data transfer rates of up to 320MBps, reduced overhead and enhanced flow control to help deliver dramatic performance gains. Improved diagnostics and data protection, as well as hot-swap capabilities with direct docking, help reduce downtime. For even greater reliability, you can create high-performance RAID arrays. Simply connect your drives to either an onboard Ultra320 SCSI controller with integrated mirroring capabilities or an IBM ServeRAID-5i Controller, available on select xSeries servers.Minimize

The IBM (39M4526) 250 GB SATA II Hard Drive is fully compatible with PC, Unix systems. Spinning up to 7200 RPM and offering capacity as large as 250 GB

Compaq hard drives are provided with the reliability and functionality needed for today's systems. All hard drives are designed and tested for compatibility and interoperability in the systems for which they are intended in order to provide the immediate, flawless integration expected from Compaq equipment.

This hot-swap Serial ATA hard disk drive offers 500GB of storage capacity in a single drive.  The 3.5" form factor and hot swap capability allow for replacing the hard disk drive without shutting the server down first.