Micropolis 1578 331MB SCSI Full Height 5.25" Vintage Hard Drive DS0012-03-9E

Micropolis 1578 331MB SCSI Full Height 5.25" Vintage Hard Drive DS0012-03-9E

The Micropolis 1578 is a full-height 5.25" SCSI hard drive offering 331MB of storage capacity. It connects via a 50-pin SCSI interface and draws power from a standard 4-pin connector, running on +12 VDC and +5 VDC at 32 watts. Manufactured by Micropolis Corporation of Chatsworth, California, this drive is a classic example of early 1990s high-capacity SCSI storage.

Specifications & What's Included

• Manufacturer: Micropolis Corporation
• Model Number: 1578
• Part Number: DS0012-03-9E
• Capacity: 331 MB
• Interface: SCSI (50-pin)
• Form Factor: Full Height 5.25"
• Power Connector: 4-pin standard power
• Input Voltage: +12 VDC, +5 VDC
• Rated Input Power: 32W
• Country of Manufacture: Singapore
• Drive only — no cables or mounting hardware included

Applications

Full-height 5.25" SCSI hard drives like the Micropolis 1578 were the standard mass storage solution for high-end workstations, servers, and minicomputers throughout the late 1980s and early 1990s. They were commonly used in Sun Microsystems workstations, Silicon Graphics systems, NeXT computers, early Apple Macintosh servers, and a wide range of Unix-based systems that relied on SCSI as their primary storage interface. The full-height form factor provided greater platter density and storage capacity than the half-height drives that eventually succeeded them. Today these drives are sought by vintage computer collectors and retrocomputing enthusiasts restoring period-correct systems, as well as anyone maintaining legacy SCSI-based hardware that requires a replacement drive of this era and capacity.