Storage system and method using persistent memory

A computer program product residing on a non-transitory computer readable medium having a plurality of instructions stored thereon which, when executed by a processor, cause the processor to perform operations comprising:

• sensing a failure within a computing system, wherein the system includes a cache memory system and a vaulted memory comprising a random access memory (RAM) having a plurality of independent persistent areas;
• providing a primary node and a secondary node, wherein the primary node occupies a first independent persistent area of the RAM of the vaulted memory and the secondary node occupies a second independent persistent area of the RAM of the vaulted memory;
• and
• writing data within the vaulted memory to a persistent media using an iterator, wherein the data includes at least one dirty page, wherein writing data within the vaulted memory to the persistent media using the iterator includes flushing the at least one dirty page to the persistent media;
• identifying the primary node as an initiator node, wherein the initiator node receives a commit request via the primary node, wherein the commit request includes a request to commit data within the vaulted memory to the persistent media;
• transferring, via the primary node, a dirty bitmap and a page descriptor to a secondary node;
• processing, in response to transferring the dirty bitmap and page descriptor via the secondary node, the dirty bitmap and page descriptor, wherein processing the dirty bitmap and page descriptor includes removing the page descriptor, allocating a new page descriptor, logging the new page descriptor, and updating a cache of the cache memory system;
• sending an update, in response to processing the dirty bitmap and page descriptor, to the primary node via the secondary node, wherein the update includes the new page descriptor;
• and
• logging the update with the new page descriptor in the primary node.

A computing system comprising:

• a memory;
• and
• a processor configured to sense a failure within a system within a computing system, wherein the system includes a cache memory system and a vaulted memory comprising a random access memory (RAM) having a plurality of independent persistent areas, wherein the processor is further configured to provide a primary node and a secondary node, wherein the primary node occupies a first independent persistent area of the RAM of the vaulted memory and the secondary node occupies a second independent persistent area of the RAM of the vaulted memory, and wherein the processor is further configured to write data within the vaulted memory to a persistent media using an iterator, wherein the data includes at least one dirty page, wherein writing data within the vaulted memory to the persistent media using the iterator includes flushing the at least one dirty page to the persistent media, wherein the processor is further configured to identify the secondary node as an initiator node, wherein the initiator node receives a commit request via the secondary node, wherein the commit request includes a request to commit data within the vaulted memory to the persistent media, wherein the processor is further configured to transfer, via a secondary node, a dirty bitmap and a page descriptor to the primary node, wherein the processor is further configured to process, in response to transferring the dirty bitmap and page descriptor via the primary node, the dirty bitmap and page descriptor, wherein processing the dirty bitmap and page descriptor includes removing the page descriptor, allocating a new page descriptor, logging the new page descriptor with a data offset, wherein the data offset is an index of a remote node, and updating a cache of the cache memory system, wherein the processor is further configured to send an update, in response to processing the dirty bitmap and page descriptor, to the secondary node via the primary node, wherein the update includes the new page descriptor, and wherein the processor is further configured to log the update with the new page descriptor in the secondary node.