- Notes, cautions, and warnings
- Introduction
- Change list
- NVDIMM-N Overview
- Hardware
- BIOS
- iDRAC NVDIMM-N Management
- Server Behavior with NVDIMM-Ns
- DIMM Configuration Changes
- Windows
- Linux
- ESXi
- General Errata
By design, Windows Server 2019 manages NVDIMM-N in a manner that differs from that of Windows Server 2016. In Windows Server 2016, if an NVDIMM-N that is in read/write mode loses power, it goes into read-only mode.
But in Windows Server 2019, if an NVDIMM-N that is in read/write mode loses power, it continues to function in read/write mode.
Similarly, if the NVDIMM-N modules are forced to Read Only through the BIOS Setup Menu or through any module related failures, these devices would still be read/write accessible under Windows Server 2019.
To make Windows Server 2019 manage NVDIMM-N in the same way as Windows Server 2016 RTM, a registry entry needs to modified.
For details refer to https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-class-memory-health