ST225N Seagate 21MB 3600RPM SCSI 5.25-inch Internal Hard Drive

This Seagate ST225N is an internal hard drive designed for systems requiring a 5.25-inch SCSI drive with moderate storage needs. It’s often found in vintage or specialized equipment where compatibility with older hardware is essential. The 21MB capacity and 3600 RPM speed provide steady performance for tasks such as data logging, archival storage, or legacy application support.

Built for IT professionals and users maintaining legacy infrastructure, this drive helps keep older systems operational without the need for major upgrades. Its SCSI interface was a standard for faster data communication in its time, supporting many industrial and business environments.

Key Features

• Compatible with SCSI controllers common in vintage systems
• Spins at 3600 RPM to balance speed and durability
• 21MB capacity fits small-scale storage requirements
• 5.25-inch size fits legacy drive bays
• Reliable for archival and light-duty usage

This drive is typically found in older workstations, servers, or specialized machinery that still rely on SCSI drives. It serves well where modern drives aren’t compatible or necessary. By using the ST225N, users can maintain system integrity and access historic data without reconfiguring their setup.