IBM 73GB 15K RPM Ultra-320 SCSI hard drive (part 26K5681) in 3.5-inch form factor. Delivers 80 MB/s sustained throughput over Ultra-320 SCSI interface, designed for high-performance enterprise storage arrays and legacy server systems requiring fast sequential access. Non-hot-swappable design; suitable for fixed-slot installations in older IBM server architectures and compatible SCSI-based storage subsystems. Typical applications include enterprise backup systems, database servers, and archival storage requiring reliability and speed over modern accessibility. This drive has been tested and guaranteed, available via quote from G5 Network Group.