System and method for storage class memory tiering

A method, comprising:

• providing, in an information handling system, a non-volatile random access memory (NVRAM) device having a storage space, and including a Label Storage Area (LSA) partition to store namespaces, each namespace defining an associated portion of the storage space as being one of a memory mode memory or a storage mode memory, wherein storage space of the NVRAM device that is defined as memory mode memory is represented as a portion of a system physical address space of the information handling system, and wherein storage space of the NVRAM device that is defined as storage mode memory is represented as a storage device in the information handling system;
• defining, by a first namespace of the (LSA) partition, a first portion of storage space of the NVRAM device as a first memory mode memory having a first size;
• defining, by a second namespace of the LSA partition, a first portion of the storage space as a first storage mode memory;
• instantiating, on an operating system of the information handling system, a paged virtual memory architecture on the information handling system;
• determining a page miss rate for pages stored in the first portion of the storage space;
• receiving a request to increase the first size of the first portion of storage space in order to increase the system physical address space of the information handling system in response to determining the page miss rate;
• and
• increasing the first size of the first portion of storage space to a second size in response to the request;
• wherein, in increasing the first size of the first portion to the second size, the method further comprises:
• deleting the LSA partition;
• writing the second namespace to the LSA partition to define the second portion of the storage space as the first storage mode memory;
• and
• writing a third namespace to the LSA to define a third portion of the storage space as a second memory mode memory having the second size, the third portion including the first portion of the storage space and an additional portion of the storage space.

An information handling system, comprising:

• a dynamic random access memory (DRAM) device;
• a non-volatile random access memory (NVRAM) device having a storage space and including a Label Storage Area (LSA) partition to store namespaces, each namespace defining an associated portion of the storage space as being one of a memory mode memory or a storage mode memory, wherein the LSA partition includes configured to a first namespace defining a first portion of the storage space as a first memory mode memory having a first size, and a second namespace defining a second portion of the storage space as a first storage mode memory, wherein a sum of storage space of the DRAM device and the first portion of the storage space of the NVRAM device is represented as a system physical address space of the information handling system, and wherein storage space of the DRAM device that is defined as storage mode memory is represented as a storage device in the information handling system;
• and
• an operating system configured to instantiate a paged virtual memory architecture on the information handling system;
• wherein the information handling system is configured to determine a page miss rate for the system physical address space, and to increase the first size of the first portion of storage space of the NVRAM device to a second size in response to a request to increase a first size of the first portion of storage space in order to increase the system physical address space of the information handling system in response to determining the page miss rate, wherein in increasing the first size of the first portion to the second size, the information handling system is further configured to delete the LSA partition, to write the second namespace to the LSA partition to define the second portion of the storage space as the first storage mode memory, and to write a third namespace to the LSA partition to define a third portion of the storage space, as a second memory mode memory, the third portion including the first portion of the storage space and an additional portion of the storage space.