Dual-port DDR4-DIMMs of SDRAM and NVRAM for SSD-blades and multi-CPU servers

摘要

A memory system is disclosed that includes a first FPGA controller coupled to a first SSD cluster, a first DDR4 DIMM and a second DDR4 DIMM. A second FPGA controller is coupled to a second SSD cluster, the first DDR4 DIMM and the second DDR4 DIMM, where the first and second FPGAs are operable to share access to the first and second DDR4 DIMMs and provide connectivity to a plurality of network resources. The dual-port design enables the use of existing SDRAM, MRAM and RRAM chips at low speed rates to reach DDR4 2.0 speed DIMM devices. The dual-port DDR4 DIMM comprises 1-to-2 data buffer splitters and a DDR3 or DDR2 to DDR4 bus adaptation/termination/relaying circuits to increase (e.g., double or quadruple) the chip speed of SDRAM, MRAM, and RRAM chips.