#VCP #Storage Non volatile memory, byte adressable persistent memory which can be installed as a DIMM close to the CPU on the memory bus which reduces Latency and high performance. Can be either configured to store a vPMemDisk or vPMem on the VM. PMem Datastore is formated and mounted automatically using VMFS-L as the filesystem. ![[_media/vSphere - Persistent Memory (PMem|vSphere - Persistent Memory (PMem|[PMem)2024-07-14.png]]2024-07-14.png]]2024-07-14.png) - vPMem (direct access mode) - is seen by the OS as persistent memory (vNVDIMM)and can be used by the applications itself - VM hardware of VM must be at least 6.7 & guest OS Windows 2016+ - vPMemDisk - Is accessed by the OS as a virtualSCSI device - available to any VM with any OS ## Use case fills the gap between RAM and traditional storage. Due to it's close proxmity to the CPU and bus type of RAM it delivers very high performance. ## Restrictions - not supported in vSAN. - Storage is only local - Backup solutions do not work with PMem - HA cannot recover any data from a failed ESXi host, it recovers the VM's pMEM with an empty vNVDIMM - PMem can only store vmdk files and NVDIMM devices, they cannot store VM files such as `.vmx` or `.log`