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This section provides an overview for redundant power supply as well as their applications and principles. Also, please take a look at the list of 4 redundant power supply manufacturers and their company rankings. Here are the top-ranked redundant power supply companies as of January, 2025: 1.Western Telematic, Inc., 2.D‑Link Europe Ltd, 3.FSP Ltd..
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Redundant power supply means that equipment such as servers and network switches on a network, which have a large impact on others even in the event of a momentary power failure, have two or more power supply units to provide a safer measure against power supply problems.
It may also refer to a system in which, in the event of a power failure in a hospital or factory where the electricity supply from the power company has been cut off, a private power generator is activated to secure the minimum necessary power and wait for the electricity supply to be restored.
In the IT field, "redundancy" refers to the provision of backups in advance to minimize the impact of a single system or device that fails or otherwise becomes inoperable, thereby enhancing safety.
In this section, the term "equipped with a redundant power supply" refers to the power supply for individual devices such as servers and network switches that have multiple power supply units built into the device and can respond to power supply problems, and the technologies and products related to this are described.
When an unexpected power failure occurs in a computer, data that was being processed in memory is lost. For computers like servers that send and receive data to and from many computers and IT devices, a loss of data integrity requires a great deal of effort to recover.
When a hard disk is reading or writing data, if the power is turned off, the data in that sector will be lost, and headers can fall onto the disk surface, causing the entire disk drive to fail. Similarly, if a network switch that relays data over the network loses power, the network will be severely affected.
To prevent the impact on networks and data processing caused by power supply-related problems, redundant power supplies are provided for servers, network switches, and other equipment that would suffer more damage in the event of a failure.
Redundant power supplies built into servers and network switches incorporate two power supply units of the same standard. Each power supply unit is connected to the power supply at all times and supplies electricity to the baseboard and other devices built into the device. If one of the power supply units should fail, the non-failed power supply unit will supply power to the equipment that was served by the failed power supply unit.
Therefore, a single power supply unit must be capable of providing the power needed by the entire equipment by itself. However, in the case of rack-mounted servers, where many units are built into a single rack, each individual unit is described as a device.
Most units that support redundant power supplies also support hot-swapping of power supplies. In equipment that supports hot-swapping, a failed power supply unit can be replaced without powering down the equipment, so there is no equipment downtime associated with replacing the power supply unit.
Even if you have equipment with redundant power supply units built in this way, it will not be able to respond in the event of a power failure. In large data centers and factories, electricity sent from the power company is separated into two systems when it is drawn into the premises, so that electricity supplied to the equipment will not be interrupted in the event of a failure in either system. An uninterruptible power system (UPS) is installed between one of the redundant power supply units and the power outlet to allow for power outages for a certain length of time.
Even if a redundant power supply is built into the equipment, it is not enough to completely prevent power supply-related problems. In order to prepare for power supply-related problems that may occur within the premises, the power supply system must be separated from the original. In addition, a UPS is necessary to prepare for power outages from the power company.
Thus, when selecting a redundant power supply, it is important to assume various risks, consider the necessary preparations for the entire power supply system, and select a redundant power supply based on its position in the system and expected effects. On the other hand, power supply units also have the role of stably supplying electricity to devices even when power supply fluctuates slightly. It is also important to examine the performance and specifications of the power supply unit as a standalone unit.
*Including some distributors, etc.
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D‑Link Corporation, founded in 1986 and headquartered in Taipei City, Taiwan, is a manufacturer of brand networking products that also provides related services. Its portfolio includes wireless LAN products, digital home appliances, and switches. It also sells cloud application product solutions and has won several foreign and local awards, including iF Design, Red Dot Design, and IoT Breakthrough awards. The company has ISO certifications like ISO 9001, ISO 14001, and ISO 45001, and it is traded on Bloomberg, Reuters, and Taiwan Stock Exchange. It has 90 operating and sales locations in 43 countries worldwide, and its paid-in capital is NT$6 billion.
FSP Group UK, incorporated in 2016, is a private limited company that operates as a holding company, based in East Sussex, England, is a manufacturer of power supply units in global marketing. The company majorly manufactures the OEM/ ODM power supply for PC, IPC, server system, workstation, and NVR/NDR. It has been cooperating with numerous global brands such as HP, Supermicro, Intel, Advantech, Siemens, Philips, TT Electronics, and many more. Its products are certified with low noise level by Cybenetics and high efficiency by 80Plus. Its overseas subsidiaries are involved in multiple sectors, providing a diverse range of services.
Phoenix Contact is headquartered in Blomberg, Germany, originally founded in 1923. Phoenix Contact’s Israeli subsidiary was founded in 2006 and located in Quadima Tzoran. Phoenix Contact provides tools and components for e-mobility, power, infrastructure, process industry, production manufacturing, system manufacturing, and others. Phoenix Contact’s product lines include automate including cloud computing, connect including PCB terminal blocks, “mark, assemble, and install” including hand tools, “supply, charge, and protect” including power distributors, and “switch, measure, and monitor” including relays and optocouplers.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Western Telematic, Inc. |
40.0%
|
| 2 | D‑Link Europe Ltd |
31.4%
|
| 3 | FSP Ltd. |
17.1%
|
| 4 | PHOENIX CONTACT |
11.4%
|
Derivation Method
The ranking is calculated based on the click share within the redundant power supply page as of January 2025. 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 Kingdom
|
2 | 50.0% |
United States of America
|
1 | 25.0% |
|
Germany
|
1 | 25.0% |
20 products found
20 products
SANYO DENKI CO., LTD.
60+ people viewing
Last viewed: 1 day ago
■Summary Highly reliable parallel redundant configuration UPS that can be used globally. Features ■High reliability By combining UPS units, you ca...
SANYO DENKI CO., LTD.
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■Summary Continuous inverter power supply system UPS with parallel redundant configuration equipped with lithium-ion batteries. Features ■High rel...
SANYO DENKI CO., LTD.
60+ people viewing
■Summary This is a constant inverter power supply type UPS that is highly efficient and capable of parallel redundant operation. Features ■High ef...
SANYO DENKI CO., LTD.
70+ people viewing
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■Summary A UPS equipped with long-life lithium-ion batteries that enables parallel redundant operation. Features ■Long lifespan Uses a lithium ion...
SANYO DENKI CO., LTD.
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■Summary Highly efficient and highly reliable continuous inverter power supply UPS with a rich lineup. A high-efficiency UPS that boasts the highes...
Nippon Weidmuller Co., Ltd.
50+ people viewing
Last viewed: 11 hours ago
■Power management solutions and services that meet all needs Power supplies have become an integral part of modern society, as everything requires ...
