39 results about "N+1 redundancy" patented technology

A switch for switching packets. The switch includes a plurality of fabrics which switch portions of packets. The switch includes a port card connected to the fabrics and the network for receiving packets from and sending packets to the network. The port card has a mechanism for tolerating whether any one of the plurality of fabrics has a failure and still sending correct packets to the network. A method for switching packets. The method includes the steps of receiving packets at a port card from a network of a switch. Then there is the step of sending to fabrics of the switch portions of the packets as stripes from the port card. Next there is the step of switching the portions of the packets with the fabrics. Then there is the step of sending back to the port card the portions of the packets as stripes from the fabrics. Next there is the step of sending correct packets with the port card to the network even though one of the fabrics has a failure.

The invention provides a fan control circuit and system. The circuit and the system are suitable for a server. The fan control circuit includes a fan controller and a substrate state detection circuit. The fan controller is connected with at least one fan connector and connected with a substrate management controller through an integrated circuit bus communication line and outputs a substrate management controller fan signal, and a main power supply supplies power to the fan controller. The substrate state detection circuit is connected with the substrate management controller and the fan controller respectively, detects a heartbeat signal of the substrate management controller and outputs a fan pulse signal according to the heartbeat signal control so as to control a fan connected with the fan connector to work normally. The N+1 redundancy of the substrate management controller (BMC) and the fan are considered, the abnormal detection and protection of all links of the whole fan control system are taken into account, and more effective, stable and comprehensive protection is provided when the fan control system is abnormal.

There is described a circuit to supply electric power to N electrical panels. The circuit comprises N+1 blockbars, each one of the blockbars being for connection to an automatic transfer switch (ATS) of a power source, each one of the blockbars being connected to at least two other ones of the N+1 blockbars via a segregating switchgear. The circuit further comprises N+1 UPS units, each one of the UPS units being for connection to a dedicated one of the blockbars via a dedicated switchgear. The circuit further comprises 2N power outputs, each one of the N electrical panels being connected to 2 of the 2N power outputs, each one of the 2N power outputs being connected to 2 of the N+1 UPS units. This configuration allows for N+1 redundancy at the generator and UPS levels to feed the electrical distribution with 2N redundancy.

The invention discloses a system and a method for achieving power redundancy. The system includes: an alternate current detection module detects input state of an alternate current input end of one path and outputs the detected state information to a monitoring module; the monitoring module controls switching on or off of a switch in a switch module according to the input state information; and the switch module controls connection or disconnection between alternate current power voltage distributed by a power distribution module and a power module through the switching on or off of the switch. The system and the method can achieve single path alternate current input and double path alternate current redundancy input simultaneously under N+1 redundancy configuration of the power supply, does not need to increase quantity of power supplies and simultaneously improves reliability of a power system and reduces cost under the premise of meeting requirements for alternate current redundancy input of a fault-tolerance server.

The invention relates to a method for realizing service N+1 redundancy backup and load sharing, wherein N>=1, comprising: a step 1, setting a load sharing policy schedule; a step 2, the N+1 block of service treatment line cards shares a IP; a step 3, a interface line card completes the service redundancy backup and load sharing between service treatment line cards. When blocks of service treatment line cards go out of order at the same time, the service treatment still keeps a continuity; and when the flow of traffic of subscriber is oversized, the flow between blocks of service treatment line cards is imbalance, by which the service treatment caused appears congesting.

The invention provides a N+1 redundancy high-voltage frequency converter with double standby power units, which is characterized by consisting of a multiple secondary winding transformer and 3m+2 power units, wherein the 3m+2 power units comprise two standby power units, the rest 3m power units are evenly divided into three groups, and each group respectively forms one phase line of the frequencyconverter by connecting m power units in series, namely a first phase line, a second phase line and a third phase line respectively; one end of one standby power unit and one end of the other standbypower unit are mutually connected together and connected with one end of the first phase line, while the other ends are respectively connected with one end of the second phase line and one end of thethird phase line; and one end of the first phase line, one end of the second phase line and one end of the third phase line, which are not connected with the standby power units form a triphase output end of the frequency converter. The high-voltage frequency converter realizes N+1 unit redundancy function only by the 3m+2 power units, saves one power unit compared with 3m+3 power units of the prior art, and reduces the realization cost.