Name: 40MB MFM / RLL 5.25 HALF HEIGHT Hard Drive
Brand: Seagate
Price: 520.95 USD
Availability: InStock

Seagate ST250R 40MB MFM / RLL 5.25 HALF HEIGHT Hard Drive

The Seagate ST250R is a classic 40 MB hard drive that uses MFM and RLL encoding on a 5.25 inch half height form factor. Designed for legacy workstations, industrial controllers and vintage computer restorations, this drive delivers reliable magnetic ... Read More

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$520.95

Ships from outside of the USA. Please allow up to 3 weeks for delivery.

In Stock: 5
Manufacturer: Seagate
Model or Part: ST250R
Condition: Refurbished
Weight: 1.00lb

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Product Information

Item Condition

New - Sealed or Open Box Condition
Excellent - Almost-New, Missing Original Packaging
Refurbished - Seller Refurbished, Good Condition, Previously Used Item

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Description

Overview
The Seagate ST250R is a classic 40 MB hard drive that uses MFM and RLL encoding on a 5.25 inch half height form factor. Designed for legacy workstations, industrial controllers and vintage computer restorations, this drive delivers reliable magnetic storage with a proven track record for durability. Its compact half height design fits easily into older chassis while providing a straightforward interface for SCSI or IDE adapters, making it an ideal upgrade for systems that require authentic period hardware.

Key Features

40 MB storage capacity for low-volume data and system files
Magnetic recording using MFM and RLL formats for flexible compatibility
5.25 inch half height form factor fits standard legacy drive bays
Robust sealed enclosure protects the platter from dust and contaminants
Simple jumper settings allow easy configuration of step rates and density
Low power consumption compared with modern high capacity drives

Technical Specifications

Model / Part Number: ST250R
Manufacturer: Seagate
Capacity: 40 MB
Form Factor: 5.25 inch half height
Recording Method: MFM / RLL
Interface: Compatible with standard IDE or SCSI adapters (adapter required)
Spindle Speed: 3600 rpm
Average Seek Time: 30 ms
Data Transfer Rate: up to 250 Kbytes per second
Operating Temperature: 0 to 55 deg C
Power Requirements: 5 V and 12 V DC

Typical Applications

Restoration of vintage PCs, workstations and servers
Embedded control systems that require proven magnetic storage
Industrial equipment where a half height drive is specified
Educational projects that demonstrate early hard drive technology
Data acquisition units that need a low-capacity, reliable disk

Whether you are rebuilding a classic computer, need a dependable storage solution for legacy hardware, or want to explore the evolution of magnetic media, the Seagate ST250R offers a blend of authenticity and performance that modern drives cannot replicate.