Hewlett Packard 291687-B21 73GB SCSI Hard Drives

Capacity: 73GB
Spindle Speed: 15,000RPM
Interface Type: SCSI 68pin / HD68 Female
Disk Size: 3.5″x1.0″ (LFF Hard Drive)
Sustained Throughput (MBps): 147
Average Seek Time (read/write ms): 3.3 / 3.8
Electrical Interface Speed: SCSI LVD U320 – 320MBps 16-bit
On-Board Cache: 8MB

Hewlett Packard 291687-B21 73GB 15K U320 68pin SCSI Hard Drive

HP Part #: 364333-001 326524-001

These HP drives have multiple FW variations including:
HPF1
HPF2
HPF4