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This section provides an overview for disk drives as well as their applications and principles. Also, please take a look at the list of 9 disk drive manufacturers and their company rankings. Here are the top-ranked disk drive companies as of May, 2026: 1.TERADYNE, 2.Server Disk Drives, 3.Western Digital.
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Categories Related to Disk Drives
A disk drive is a data storage device consisting of a disk for storing information and a head for reading and writing this information. Disk drives are classified into magnetic disk drives (like floppy and hard disks) and optical disk drives (such as CDs). Internal disk drives are built into the computer, while external disk drives connect via interfaces like USB.
Disk drives are crucial in computer systems for storing data and programs. Magnetic disk drives, offering high-speed access, are commonly used as boot disks for operating systems. SSDs (solid-state drives) are increasingly favored for their faster access speeds. Optical disk drives, with slower access speeds, are used for data storage, backup, and distribution of multimedia content.
Magnetic disk drives use magnetism for writing and reading, whereas optical disk drives use lasers. Magnetic drives write information by magnetizing a magnetic layer and reading it by detecting magnetic field changes. Optical drives use a spindle motor to rotate the media and a laser beam to read information from the reflected light. CDs and DVDs utilize a red laser, while Blu-ray discs use a blue-violet laser with a shorter wavelength, allowing for higher storage capacity.
Failures in disk drives, often due to their mechanical parts or high precision, can sometimes be resolved by cleaning the pickup lens. Disc media defects like scratches or stains can also cause read issues. Internal physical failures require specialist repair due to the complexity of the drive's structure.
Noise from a disk drive may be due to improper installation or disk insertion. Securing the drive properly inside the PC and correctly inserting the disk can often mitigate noise issues. Eccentric disk media or attached labels can also cause temporary noise.
Optical disk drives like Blu-ray use blue-violet lasers with shorter wavelengths, enabling them to store more data than DVDs. These drives vary in terms of writeable and read-only capabilities.
*Including some distributors, etc.
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Teradyne, founded in 1960, is an American automatic test equipment designer and manufacturer based in North Reading, Massachusetts. The company provides wireless test solutions for the development and manufacturing of wireless devices such as notebooks, laptops, tablets, smartphones, and other Wi-Fi-enabled devices. These enable efficient and accurate testing processes during the production of these devices. Their products are used in computing, communications, consumer, identification, and internet applications, and are certified by ISO 9001:2015 industry standards.
Western Digital, founded in San Jose, CA in 1986 is a manufacturer of data storage solutions such as USB Flash Drives, Memory Cards and Data Center Storage. The company's product portfolio includes Solid State Drives (SSDs), Hard Drives (HDDs), Network Attached Storage (NAS), Embedded Flash and Accessories. The company serves markets including Automotive and Electric Vehicles, Renewable Energy and Energy Storage and Electronics and IT Infrastructure. They also provide services such as equipment repair, instrumentation system upgrades, warranty service and technical support.
Donaldson Company, Inc. is a manufacturer headquartered in Hennepin County, Minnesota, specializing in filtration technologies. The company was established in 1915 when Frank Donaldson Sr. invented an air cleaner for farm tractors. Today, Donaldson offers filtration products and solutions, including bulk tank filtration systems and engineered air intake systems designed for gas turbines and industrial compressors. Additionally, the company provides engine filters and parts, along with Internet of Things (IoT) services to monitor and maintain filtration equipment. Donaldson's products find application across a wide range of industries, including aerospace and defense, agriculture, construction, manufacturing, and transportation.
Sabrent, located in Los Angeles, California, and established in 1998, is a manufacturer of a wide range of computer peripherals and accessories. The company specializes in crafting products such as storage solutions, memory devices, cables, hard drive accessories, and card readers. They have introduced the 8TB Rocket Q, 16TB dual Rocket Thunderbolt Dock, 8TB Rocket 4 Plus, 512GB UHS-II SD card, and 1TB CFexpress cards. The company serves more than 100 countries, offering a diverse catalog of over 400 products, which now includes RAM, SD cards, and CFexpress cards.
Seagate Technology Holdings plc, established in 1978 as Shugart Technology, is a manufacturer headquartered in Dublin, Ireland, with operational headquarters in Fremont, California, United States, specializing in data storage solutions. The company offers cloud, edge, and data centers, encompassing data storage systems, enterprise drives, and edge-to-cloud mass storage platforms. Specialized drives such as gaming hard drives and solid-state drives (SSDs), network-attached storage (NAS) devices, video analytics hard drives, and both internal and external drives for personal storage are also part of the company’s portfolio. These offerings serve a range of industries including autonomous vehicles, media and entertainment, surveillance and security, and telecommunications.
Dell Inc. is an American developer and manufacturer of personal computers and related products established in Round Rock, Texas in 1984 as a business unit of Dell Technologies. The company primarily designs and produces various personal computers, including desktop, laptop, netbook, and tablet models. They also manufacture servers, storage devices, computer peripherals, and network switches to wide a range of specifications, including for large enterprises or competitive gaming. Dell, Inc. operates globally with more than 50 facilities, sales offices and distribution centers across North America, South America, Europe, and Asia.
Ranking as of May 2026
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | TERADYNE |
32.1%
|
| 2 | Server Disk Drives |
12.8%
|
| 3 | Western Digital |
9.1%
|
| 4 | Seagate |
7.8%
|
| 5 | Toshiba America Electronic Components, Inc., |
7.7%
|
| 6 | Sabrent |
7.6%
|
| 7 | Donaldson Company, Inc. |
6.0%
|
| 8 | NIDEC SANKYO |
5.8%
|
| 9 | CBO-DO |
5.5%
|
| 10 | Dell Inc. |
5.5%
|
Derivation Method
The ranking is calculated based on the click share within the disk drive page as of May 2026. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
4 | 100.0% |
165 products found - Page 3
165 products - Page 3
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