CAB-RPSY-2218 72-1196-01 Cisco RPS DC Power Cable

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Cisco CAB-RPSY-2218 Redundant DC Power Load Cable

RPS is the abbreviation of Redundant Power System, which can be used as an external DC power supply for some switches. Redundant power supply is a kind of power supply used in server, industrial computer (Industrial PC; IPC) security monitoring, etc. It is composed of two identical power supplies, and the chip controls the power supply for load balancing. When one power supply fails, the other power supply immediately takes over its work. After the power supply is replaced, the two power supplies work in coordination again. Redundant power supplies are for high availability of server systems.

For some systems that require long-term uninterrupted operation and high reliability, such as base station communication equipment, equipment, servers, etc., high reliability and high stability of power supply are often required. Redundant power supply design is a key part of it and plays an important role in a high availability system. Redundant power supplies are generally configured with more than 2 power supplies. When one power supply fails, the other power supplies can be switched on immediately without affecting the normal operation of the equipment. This is similar to the working principle of the UPS power supply, which is replaced by the battery when the mains power fails. The difference between a redundant power supply and a UPS power supply is that it is powered by different power supplies at the same time, while the UPS power supply is one power supply and the other is ready for standby, and automatically switches when necessary. However, the UPS power supply has the advantage of on-line zero-switching compared with the redundant power supply.

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