| CPC G06F 11/0757 (2013.01) [G06F 1/266 (2013.01); G06F 11/0727 (2013.01); G06F 11/2005 (2013.01); G06F 11/2007 (2013.01); G06F 11/2092 (2013.01)] | 20 Claims |

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1. A method of managing a server cluster that includes multiple servers, the method comprising:
receiving, from a server in the server cluster, a set of heartbeat signals through a power transmission circuit constructed and arranged to deliver power to the server cluster;
detecting an interruption in receiving the set of heartbeat signals; and
in response to detecting the interruption in receiving the set of heartbeat signals, performing a remedial activity to coordinate input/output (I/O) operations among the multiple servers in the server cluster;
wherein the set of heartbeat signals includes a first identifier of the server in the server cluster;
wherein an identifying device is coupled with the power transmission circuit, the identifying device being constructed and arranged to provide a second set of heartbeat signals through the power transmission circuit, the second set of heartbeat signals including a second identifier of the identifying device, the second identifier being different from the first identifier; and
wherein the method further comprises:
while receiving the set of heartbeat signals from the server through the power transmission circuit, receiving the second set of heartbeat signals from the identifying device through the power transmission circuit.
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