Abstract: A method for managing a data input/output operation of a virtual node of a virtualized environment running on a host computer. The method comprises: receiving a request of the virtual node for memory write of data, generating a first packet descriptor of a packet carrying a message according to a communication protocol between the host computer and the data storage network node, generating at least one second packet descriptor of the packet based on the information related to the at least one location in the local memory of the data; and providing the first and second packet descriptors to a network interface of the host computer for transmission of the message to the data storage network node.