mram is applicated on Enterprise Data Storage (RAID system)

RAID (Redundant Array of Inexpensive Disks) is a data storage structure of combining two or more physical storage devices (HDDs, SSDs) into a logical unit (an array) that is seen by the attached system as a single drive.

The journal memory in a RAID controller card   stores log and critical data such as completion of data write, parity write, fail log, etc. At power failure, the controller refers to Journal memory and figures out where to start to recover, so data in the journal memory should be kept even at power failure. Battery-backed SRAM or nvSRAM is being used as journal memory.

As MRAM is a non-volatile memory and provides a fast write and real-time data storage, it is an ideal memory for RAID system.