Patent ID: 8386594

Claim:
An apparatus comprising: network controller circuitry to be comprised in a first host computer and in a second host computer, the first host computer including a host processor to execute an operating system environment, the network controller circuitry to initiate, at least in part, one or more checkpoints of, at least in part, one or more states associated with, at least in part, the operating system environment and network traffic between the first host computer and the second host computer, the network controller circuitry also to coordinate, at least in part, respective execution, at least in part, by the network controller circuitry of the one or more checkpoints with respective execution of one or more other respective checkpoints of the second host computer, the network controller circuitry to store respective retransmit buffer state information of the first host computer and the second host computer that permits reconstruction, via use of communication retries following system restart, of communication protocol state information related to in-flight messages between the first host computer and the second host computer.