How Persistent Memory Will Change Computing

Summary

Persistent memory has the promise of non-volatile data storage, but with performance almost comparable to DRAM and for less cost than DRAM. A key attribute of PM is that, if for some reason, the system loses power, the data stored on the PM, perhaps on DIMMs containing the PM, is not lost as it would be with DRAM.

Persistent memory fits into a system's data storage hierarchy above permanent storage, such as disk and flash drives, but below DRAM. The non-volatile nature of PM means that it bridges the gap between storage that is either on the bus or outside the system and DRAM that is inside the system. This could be a really disruptive development for data storage. Be sure to keep a sys on it.