1. A circuit module comprising: a circuit medium designed to be installed within a host device; a non-volatile memory disposed on the circuit medium, to store log data representing data access requests received by a network storage system; and a cluster interconnect adapter disposed on the circuit medium, through which to send the log data to a cluster partner of the network storage system, the cluster interconnect adapter including control circuitry to control access to the non-volatile memory and to control communication with the cluster partner, the control circuitry including a host channel adapter; a first connector coupled to the control circuitry, to couple the cluster interconnect adapter to an external communication link for communication with the cluster partner; and a second connector coupled to the control circuitry, to couple the cluster interconnect adapter to an internal expansion bus of the host device, through which to receive the log data.