Configuring persistent memory for Azure Stack HCIIntel Optane DC persistent memory is designed to improve overall data center system performance and lower storage latencies by placing storage data closer to the processor on nonvolatile media. The persistent memory modules are compatible with DDR4 sockets and can exist on the same platform with conventional DDR4 DRAM DIMMs. In App Direct Mode, the operating system distinguishes between the RAM and persistent storage memory spaces. Configuring Azure Stack HCI persistent memory hostsThree types of device objects are related to persistent memory on Windows Server 2019: the NVDIMM root device, physical INVDIMMs, and logical persistent memory disks. In Device Manager, physical INVDIMMs are displayed under Memory devices, while logical persistent disks are under Persistent memory disks. The NVDIMM root device is under System Devices. The scmbus.sys driver controls the NVDIMM root device.