Symmetrical Data Replication For Failure Management In Non-Volatile Memory Systems

Methods and systems are disclosed for symmetrical replication of data within multiple data subsystems for failure management in non-volatile memory (NVM) systems. Disclosed embodiments perform symmetrical write operations to multiple different data block subsystems so that duplicate subsystems are created. As the subsystems are operated symmetrically, address locations and pointers are the same for each subsystem. If an error is detected in data within one subsystem, the duplicated data at the same symmetrical location within a duplicate subsystem can be used. As such, the endurance and lifetime of NVM systems is greatly enhanced. These extended lifetime NVM systems can then be used, for example, to emulate EEPROM (erasable programmable read only memory) systems.