Non-volatile memory's future is in software

New memory technology to serve dual roles of mass storage and system memory

By , Computerworld |  Storage, Servers

There will be a sea change in the non-volatile memory (NVM) market over the next five years, with more dense and reliable technologies challenging dominant NAND flash memory now used in solid-state drives (SSDs) and embedded in mobile products.

As a result, server, storage and application vendors are now working on new specifications to optimize the way their products interact with NVM, moves that could lead to the replacement of DRAM and hard drives alike for many applications, according to the Storage Networking Industry Association (SNIA) technical working group.

"This [SNIA] working group recognizes that media will change in next three to five years. In that time frame, the way we handle storage and memory will have to change," said SNIA technical working group member Jim Pappas. "Industry efforts are under way to remove the bottleneck between the processor and the storage."

Pappas, who is also the director of technology initiatives in Intel's Data Center Group, noted there are more than a dozen non-volatile memory competitors coming down the pike to challenge NAND flash. Those technologies include Memristor, ReRam, Racetrack Memory, Graphene Memory and Phase-Change Memory.

IBM's phase-change memory chip uses circuitry that is 90 nanometers wide and could someday challenge NAND flash memory's market dominance.

"What is happening across the industry with multiple competing technologies to NAND flash is the memory that goes into SSDs today will be replaced by something very close to the performance of system memory," Pappas said. "So now, it's the approximate speed as system memory, but yet it's also nonvolatile. So it's a big change in computing architecture."

For example, last year IBM announced a breakthrough in phase-change memory that could lead to the development of solid-state chips that can store as much data as NAND flash technology but with 100 times the performance, better data integrity and vastly longer lifespan.

SNIA's Non-Volatile Memory (NVM) Programming Technical Working Group, which includes a who's who of hardware and software vendors, is working on three specifications. First, the group wants to improve the OS speed by making it aware when a faster flash medium is available; secondly, it wants to give applications direct access to the flash through the OS; and lastly, it wants to enable new NVMs to be used as system memory.

"Most significantly, when you use non-volatile memory in the future, you can use as part of it for your memory hierarchy and not just [mass] storage," Pappas said.

Originally published on Computerworld |  Click here to read the original story.
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