[WEBINAR] Application Acceleration: Faster Performance for End Users

ST-506 Interface

Definition - What does ST-506 Interface mean?

The ST-506 interface was a standard hard disk controller (HDC) and ST-506 interface used to connect personal computers (PC) and hard disk drives (HDD). It connected to a controller card with two cables and a third power cable and was the first five and a quarter-inch hard disk drive by Seagate Technology, formerly Shugart Technology.

The ST-506 is also known as modified frequency modulation (MFM) - an encoding scheme for floppy drives and older HDDs.

Techopedia explains ST-506 Interface

The ST-506 interface was derived from Shugart's SA1000 interface, which in turn was derived from the five and a quarter-inch floppy drive interface - facilitating easy disk controller design. The ST-506, ST-412 and ST-412RLL interfaces were de facto HDD standards through the 1990s. Unlike modern hard disk drive systems, on-board processing power was not provided, which was a non-issue during that period.

The ST-506 disk drive lacked buffered seek capability and averaged a seek time of only 170 ms, versus ST-412 drives with buffered seek capability, which averaged 85 ms and 15-30 ms by the late 1980s.

Techopedia Deals

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
"Techopedia" on Twitter

Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.