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JEDEC gives nod for hybrid NVDIMM modules support

Posted: 04 Jun 2015     Print Version  Bookmark and Share

Keywords:JEDEC  SNIA  DDR4 memory modules  DDR4 DIMM 

Although the standards work for NVDIMM is still in its early days, there are already products available. In April, Netlist updated its NVvault product line with the introduction of its EXPRESSvault EV3 PCI Express 3.0 Non-volatile RAM, telling EE Times it was a natural extension of its NVDIMM technology, providing an alternative to flash-only options or ULLtraDIMM technology that is not dependent on the memory bus technology.

SanDisk officially started shipping its ULLtraDIMM SSD with select enterprise servers at the beginning of last year. The ULLtraDIMM SSD leverages Diablo Technologies' memory channel storage (MCS) architecture and connects NAND flash directly to the CPU through a server's memory bus; the ULLtraDIMM can be integrated into an existing DIMM slot, and additional SSDs can also be added to available DIMM slots.

Viking's ArxCis NVDIMM can be slotted into servers and RAID controllers as an alternative for battery backed-up memory modules, using supercapacitors to write to NAND flash. They can also be paired with SSDs to extend their life and performance. Meanwhile, Micron, one of the earliest participants in the SNIA NVDIMM SIG, offers NVDIMMs for use in server RAID storage, storage cache tiering, data logging, de-duplication, data logging and metadata persistent storage, as metadata must be accessed frequently and quickly in big data applications, such as data warehousing, data mining, and data analytics. The company had announced plans in early 2013 to place NAND flash along with DRAM on memory modules that ride the DDR4 bus.

SNIA created the NVDIMM SIG to foster their adoption, envisioning them as the early building blocks of computing architectures that combine storage and memory as a single entity. Launched during the 2014 SNIA Annual Members' Symposium, the NVDIMM SIG is an open community. Part of the NVDIMM SIG's mandate is to educate system vendors on incorporating NVDIMMs into their servers and platforms and to communicate industry standards to foster NVDIMM adoption and evolution in the ecosystem.

- Gary Hilson
  EE Times U.S.

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