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HP 402521-B21 9.1GB Wide Ultra2 SCSI 7200 3.5-in Hard Drive
- Capacity: 9.1GB
- Interface: Wide Ultra2 SCSI (LVD)
- Rotational Speed: 7200 RPM
- Form Factor: 3.5-inch
- Drive Type: HDD (Hard Disk Drive)
- Compatibility: SCSI-based systems
- Vintage Enterprise Storage
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Product Overview
The HP 402521-B21 is a 9.1GB Wide Ultra2 SCSI hard drive with a rotational speed of 7200 RPM. It is a 3.5-inch drive designed for older server and workstation systems that utilize the SCSI interface.
Technical Information
| Capacity | 9.1GB |
| Interface | Wide Ultra2 SCSI (LVD) |
Additional Specifications
| Rotational Speed | 7200 RPM |
| Form Factor | 3.5-inch |
Product Description
This HP 402521-B21 hard drive represents a generation of storage technology that was prevalent in enterprise environments before the widespread adoption of SATA and SAS. With a capacity of 9.1GB, it is suitable for operating systems, applications, or data sets that were common during its era. The 7200 RPM rotational speed provided a good balance of performance and reliability for its time. The key feature of this drive is its Wide Ultra2 SCSI interface. Ultra2 SCSI (also known as LVD/SE) offered significant improvements in speed and cable length over previous SCSI standards. The 'Wide' designation indicates it uses a 16-bit data path, further enhancing transfer rates. This interface was favored for its robustness, command queuing capabilities, and ability to support multiple devices on a single bus, making it a staple in servers and high-end workstations. While largely superseded by modern interfaces, drives like the HP 402521-B21 may still be relevant for maintaining legacy systems or for specific archival purposes where compatibility with older hardware is essential. It serves as a reminder of the evolution of storage technology and the specialized interfaces that once dominated the enterprise market.
