A method, comprising: receiving a command, at a memory controller, of a non-volatile mass memory module that is coupled to a host device, the command for writing data that resides in a system memory of the host device to the non-volatile memory module, the system memory being separate from the non-volatile memory module, the command received from an initiator; the method being characterized by further: initiating, by the memory controller of the non-volatile mass memory module in response to the command, a write of the data that resides in a first in the system memory of the host device into a second location in the system memory of the host device, the second location in the system memory of the host device for use at least by the non-volatile mass memory module; and sending, by the memory controller, in response to the write of the data that resides in the first location in the system memory of the host device into the second location in the system memory of the host device and without first initiating writing the data into a non-volatile memory of the non-volatile mass memory module, an acknowledgment indicating that the command for writing the data that resides in the system memory of the host device to the non-volatile mass memory module has been executed, the acknowledgement sent to the initiator of the command. receiving a command, at a memory controller, of a non-volatile mass memory module that is coupled to a host device, the command for writing data that resides in a system memory of the host device to the non-volatile memory module, the system memory being separate from the non-volatile memory module, the command received from an initiator; the method being characterized by further: initiating, by the memory controller of the non-volatile mass memory module in response to the command, a write of the data that resides in a first in the system memory of the host device into a second location in the system memory of the host device, the second location in the system memory of the host device for use at least by the non-volatile mass memory module; and sending, by the memory controller, in response to the write of the data that resides in the first location in the system memory of the host device into the second location in the system memory of the host device and without first initiating writing the data into a non-volatile memory of the non-volatile mass memory module, an acknowledgment indicating that the command for writing the data that resides in the system memory of the host device to the non-volatile mass memory module has been executed, the acknowledgement sent to the initiator of the command. initiating, by the memory controller of the non-volatile mass memory module in response to the command, a write of the data that resides in a first in the system memory of the host device into a second location in the system memory of the host device, the second location in the system memory of the host device for use at least by the non-volatile mass memory module; and sending, by the memory controller, in response to the write of the data that resides in the first location in the system memory of the host device into the second location in the system memory of the host device and without first initiating writing the data into a non-volatile memory of the non-volatile mass memory module, an acknowledgment indicating that the command for writing the data that resides in the system memory of the host device to the non-volatile mass memory module has been executed, the acknowledgement sent to the initiator of the command.