# US 2018/0024609 A1 · Backup power communication > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0024609 A1 - Document ID: US20180024609A1 - Status: Published application - Kind: A1 - Application number: 15/532,841 - Filed: 2014-12-02 - Published: 2018-01-25 - Earliest claimed: 2014-12-02 - Assignees: Hewlett Packard Enterprise Development LP - Applicants: Hewlett Packard Enterprise Development LP - Inventors: Matthew T. Bolt; Patrick M. Schoeller; Patrick A. Raymond; David Kimler Altobelli - Web page: https://patentgrep.com/patent/US20180024609A1 ## CPC - G06F 1/305: {in the event of power-supply fluctuations} - G06F 1/263: {Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence)} - G06F 1/3287: by switching off individual functional units in the computer system - G06F 13/4282: {on a serial bus, e.g. I2C bus, SPI bus (on daisy chain buses G06F13/4247)} - H04L 67/104: Peer-to-peer [P2P] networks - G06F 2213/0026: PCI express - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Example implementations relate to backup power communication. For example, a system includes a shared backup power supply coupled to a node, where the shared backup power supply includes a first communication interface. The system also includes a plurality of loads supported by the node, where each load of the plurality of loads includes a second communication interface. The first and second communication interfaces support peer-to-peer (P2P) communication between the shared backup power supply and the plurality of loads. ## Claims ### Claim 1 A system, comprising: a shared backup power supply coupled to a node, wherein the shared backup power supply includes a first communication interface; and a plurality of loads supported by the node, wherein each load of the plurality of loads includes a second communication interface, the first and second communication interfaces to support peer-to-peer (P2P) communication between the shared backup power supply and the plurality of loads. ### Claim 2 (depends on 1) The system of claim 1, comprising a central processing unit (CPU) of the node, the CPU to route the communication between the shared backup power supply and the plurality of loads. ### Claim 3 (depends on 1) The system of claim 1, wherein the first and second communication interfaces are peripheral component interconnect express (PCIe) interfaces. ### Claim 4 (depends on 1) The system of claim 1, wherein the second communication interface supports P2P communication among the plurality of loads. ### Claim 5 (depends on 1) The system of claim 1, wherein the communication includes status and activity information. ### Claim 6 (depends on 1) The system of claim 1, the shared backup power supply to provide backup power to the plurality of loads in response to an interruption of a primary power supply. ### Claim 7 (depends on 1) The system of claim 1, wherein the shared backup power supply includes a controller and wherein the controller includes the first communication interface. ### Claim 8 (depends on 1) The system of claim 1, wherein the plurality of loads each include a controller and wherein the controller includes the second communication interface. ### Claim 9 (depends on 1) The system of claim 1, wherein the plurality of loads includes an array controller and a storage device and wherein the storage device includes a dual in-line memory module (DIMM) and a non-volatile dual in-line memory module (NVDIMM). ### Claim 10 A system comprising, a shared backup power supply to provide backup power to a plurality of loads of a node, wherein the shared backup power supply includes a control module that includes a first communication interface; and an array controller coupled to the plurality of loads, the array controller to manage the plurality of loads and wherein the array controller includes a second communication interface, the first and second communication interfaces to support peer-to-peer (P2P) communication between the shared backup power supply and the plurality of loads. ### Claim 11 (depends on 10) The system of claim 10, wherein the first and second communication interfaces are peripheral component interconnect express (PCIe) interfaces. ### Claim 12 (depends on 10) The system of claim 10, wherein the first communication interface of the shared backup power supply and the second communication interface of the array controller are communicatively coupled to a central processing unit (CPU) of the node. ### Claim 13 (depends on 12) The system of claim 12, wherein the CPU supports P2P communication between the shared backup power supply and the plurality of loads and wherein the CPU supports P2P communication among the plurality of loads. ### Claim 14 A non-transitory machine-readable storage medium encoded with instructions executable by a processor, the machine-readable storage medium comprising instructions to: send a request from a shared backup power supply to a plurality of loads of a node using a peer-to-peer (P2P) communication protocol; and receive, by the shared backup power supply, a response from the plurality of loads using the P2P communication protocol, the response identifying a subset of the plurality of loads that are to be protected by the shared backup power supply. ### Claim 15 (depends on 14) The non-transitory machine-readable storage medium of claim 14, comprising instructions to: route the communication between the shared backup power supply and the plurality of loads via a central processing unit (CPU) of the node, wherein the CPU supports P2P communication between the shared backup power supply and the plurality of loads, and wherein the communication includes activity and status information of the shared backup power supply and the plurality of loads.