Persistent memory and NVDIMM terminology

The terminology used in persistent memory tends to overlap and multiple terms may apply for a single component. The HPE 8GB NVDIMM might be referenced using any of the following terms:

  • Persistent memory — Memory delivering the performance of memory with the persistence of storage
  • SCM — Storage class memory; encompasses emerging technologies
  • NVM — Non-volatile memory; includes slower technologies, such as flash memory
  • DIMM — Dual Inline Memory Module
  • RDIMM — Registered DIMM
  • NVDIMM — Non-volatile DIMM; provides persistent memory
  • NVDIMM-N — NVDIMM with byte-addressable programming interface to DRAM, backed up to flash memory when needed (energy backed)
  • NVRDIMM — NVDIMM that is also an RDIMM
  • NVRDIMM-N — NVRDIMM that is also an NVDIMM-N

The HPE 8GB NVDIMM Single Rank x4 DDR4-2133 Module is not any of the following:

  • UDIMM — Unbuffered DIMM
  • LRDIMM — Load reduced DIMM