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All colleagues unite and focus their efforts to write a new chapter of developmentDetailed Explanation of Redundant Power Supplies and Their Differences from Dual-Power Systems
所属分类： Company News
发布时间：2022-07-27
Redundant power supply It is a type of power supply used in servers, consisting of two identical units that are load-balanced by a dedicated controller chip. When one power supply fails, the other immediately takes over; after the faulty unit is replaced, the two power supplies resume working in tandem. Redundant power supplies are designed to ensure high availability for server systems. In addition to servers, disk‑array systems also make extensive use of redundant power solutions.
Configuration
Redundant power supplies for servers come in many configuration options, such as:
A 1+1 power configuration means the server can operate normally with a single power module, but it is physically equipped with two power modules, one of which serves as a redundant backup.
A 2+1 power configuration means the server can operate normally with two power modules, but it is physically equipped with three—one of which serves as a redundant backup.
A 2+2 power configuration means the server can operate normally with just two power modules, but it is physically equipped with four—two of which serve as redundant backup units.
As for which power configuration a server should adopt, first, consider how many power modules the server can support; second, take into account its intended use and criticality. For mission‑critical servers that cannot afford downtime for maintenance, and provided budget allows, it is advisable to equip them with redundant power supplies.
A server equipped with redundant power modules, when one of the power modules fails, Redundant power supply It will immediately enter operation, and the motherboard buzzer will sound an alarm.
Function
PS power supplies (Redundant Power System) serve as external DC power sources for certain switches.
The RPS can be used as a redundant backup power supply for switches or routers:
l If the RPS and the powered equipment share the same AC power supply system, when an internal power failure occurs in the powered equipment, the RPS can continue to provide DC power to the faulty device, ensuring its uninterrupted and normal operation;
l If the RPS and the powered equipment use different AC power supply systems, the system can continue to provide DC power even when the external AC power source for the powered equipment fails, ensuring the equipment’s uninterrupted and normal operation.