1. A method, comprising: dynamically managing, by a memory module controller of a mass memory module, storage of all or a portion of operational state data for operating the memory module controller into an extended random access memory comprised in a memory of the mass memory module and in a host system memory of a host device; and reading, by the memory module controller after waking up from a shut down or a sleep state of the mass memory module, at least a part of the operational state data from one or more of: the extended random access memory and a non-volatile mass memory to restore an operational state of the memory module controller.