Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

History of IBM magnetic disk drives

IBM manufactured magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD) and floppy disk drive (FDD) were invented by IBM and as such IBM's employees were responsible for many of the innovations in these products and their technologies. The basic mechanical arrangement of hard…

Products & Measurement

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around History of IBM magnetic disk drives. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Early IBM HDDs

IBM 305 RAMACIBM 355653Zellerbach Paper CompanyUnited Airlines
39 related topics

IBM System/360 and other IBM mainframe HDDs

13022841 Control UnitDrumIBM 2880Block Multiplexor Channel
24 related topics

Overview

IBMDisk storageHitachiHard disk driveFloppy disk
28 related topics

DASD devices not HDDs or FDDs

IBM 7320IBM 2303IBM 2321 Data CellIBM 3850 Mass Storage System
4 related topics

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Early IBM HDDs

IBM System/360 and other IBM mainframe HDDs

OEM and Small Systems HDDs

Floppy disk drive

"Star" series of HDDs

DASD devices not HDDs or FDDs

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

History of IBM magnetic disk drives

Nodes112
Edges111
Triples13
Avg. degree1.98
Density0.017857
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

ibm disk drive storage model unit drives system access one two first capacity control used hdd per models head data

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
catalogsinstance ofThe 2305 was also used for high activity small data sets0.80text
job queues.The 2305-1 has a capacity of 5.4 MBinstance ofThe 2305 was also used for high activity small data sets0.80text
runs at 3.0 MB/second when attached using the 2-byte channel interfaceinstance ofThe 2305 was also used for high activity small data sets0.80text
the 2312 or 2318 can attach to the 2319-A12319 B series of three disk drives modules allow threeinstance ofConventional 2314 DASD0.80text
six or nine drive attachment to a new 2314 Model B Storage Control Unit.IBM 3310IBM introduced the IBM 3310 Direct Access Storage Device on January 30instance ofConventional 2314 DASD0.80text
1979instance ofConventional 2314 DASD0.80text
for IBM 4331 midrange computersinstance ofConventional 2314 DASD0.80text
six or nine drive attachment to a new 2314 Model B Storage Control Unitinstance ofConventional 2314 DASD0.80text
the System/3instance ofOEM and Small Systems HDDsThis section lists IBM manufactured HDDs offered both as an OEM product and for attachment to IBMs small systems0.80text
System/32instance ofOEM and Small Systems HDDsThis section lists IBM manufactured HDDs offered both as an OEM product and for attachment to IBMs small systems0.80text
/34instance ofOEM and Small Systems HDDsThis section lists IBM manufactured HDDs offered both as an OEM product and for attachment to IBMs small systems0.80text
/36instance ofOEM and Small Systems HDDsThis section lists IBM manufactured HDDs offered both as an OEM product and for attachment to IBMs small systems0.80text

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.