Storage class memory (SCM) memory mode cache system

An Information Handling System (IHS), comprising:

• a chassis;
• a memory system that is located in the chassis and that includes:
• a Storage Class Memory (SCM) subsystem;
• and
• a Non-Volatile Dual Inline Memory Module (NVDIMM-N) subsystem including at least one volatile memory device and at least one non-volatile memory device;
• a processing system that is coupled to the memory system and that is configured to:
• write a plurality of data to the at least one volatile memory device in the NVDIMM-N subsystem and, in response, update a cache tracking database;
• write a first subset of the plurality of data to the SCM subsystem subsequent to the writing of the plurality of data to the at least one volatile memory device in the NVDIMM-N subsystem and, in response, update the cache tracking database;
• and
• receive a shutdown signal and, in response, copy the cache tracking database to the at least one volatile memory device in the NVDIMM-N subsystem, wherein the NVDIMM-N subsystem is configured to copy at least some of the plurality of data and the cache tracking database from the at least one volatile memory device in the NVDIMM-N subsystem to the at least one non-volatile memory device in the NVDIMM-N subsystem prior to a shutdown associated with the shutdown signal.

A method for providing a Storage Class Memory (SCM) memory mode Non-Volatile Dual Inline Memory Module (NVDIMM-N) cache, comprising:

• writing, by a memory controller to at least one volatile memory device in an Non-Volatile Dual Inline Memory Module (NVDIMM-N) subsystem, a plurality of data and, in response, updating a cache tracking database;
• writing, by the memory controller to an Storage Class Memory (SCM) subsystem subsequent to the writing of the plurality of data to the at least one volatile memory device in the NVDIMM-N subsystem, a first subset of the plurality of data and, in response, updating the cache tracking database;
• receiving, by the memory controller, a shutdown signal and, in response, copying the cache tracking database to the at least one volatile memory device in the NVDIMM-N subsystem;
• and
• copying, by the NVDIMM-N subsystem, at least some of the plurality of data and the cache tracking database from the at least one volatile memory device in the NVDIMM-N subsystem to the at least one non-volatile memory device in the NVDIMM-N subsystem prior to a shutdown associated with the shutdown signal.