Dell PowerEdge R740 EMC NVDIMM-N Persistent Memory User Guide - Page 37

Operational and Diagnostics Logging information, Storage Class Memory in Windows Server 2019

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space with a mirrored NVDIMM-N write-back cache as a virtual drive. To setup storage spaces configuration on NVDIMM-N, see Configuring Storage Spaces with a NVDIMM-N write-back cache. Operational and Diagnostics Logging information The NVDIMM-N bus driver, scmbus.sys, writes its logs to the Microsoft-Windows-Scmbus provider. To see them, open Event Viewer and navigate to Applications and Services Logs -> Microsoft -> Windows -> Scmbus The NVDIMM-N disk driver, scmdisk0101.sys, writes its logs to the Microsoft-Windows-ScmDisk0101 provider. To see them, open Event Viewer and navigate to Applications and Services Logs -> Microsoft -> Windows -> ScmDisk0101 Following is the example NVDIMM-N Disk Figure 23. Operational and Diagnostics Logging information: NVDIMM-N Disk By using the UniqueId or serial number one can identify the NVDIMM-N physical location Figure 24. NVDIMM-N physical location Storage Class Memory in Windows Server 2019 NVDIMM-N FW Requirement Windows Server 2019 requires NVDIMM-N devices to support labels in order for the OS to configure namespaces. NVDIMM-N Firmware 8860 doesn't have label space functionality and devices with this firmware cannot be configured by Windows Server 2019. The NVDIMM-N firmware must be updated to FW 9324 or above so that the devices can be successfully configured and used in Windows Server 2019. It is also recommended to update BIOS, iDRAC and the Operating System as part of the scheduled update. Driver Architecture Overview There are two types of device objects related to persistent memory in Windows Server - Physical NVDIMMs and Logical Persistent Memory Disks on top of the physical driver. In Device Manager, physical NVDIMMs appear under "Memory devices", while logical disks are under "Persistent memory disks". Windows 37

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space with a mirrored NVDIMM-N write-back cache as a virtual drive. To setup storage spaces configuration on NVDIMM-N,
see
Configuring Storage Spaces with a NVDIMM-N write-back cache
.
Operational and Diagnostics Logging information
The NVDIMM-N bus driver, scmbus.sys, writes its logs to the Microsoft-Windows-Scmbus provider. To see them, open Event Viewer and
navigate to Applications and Services Logs -> Microsoft -> Windows -> Scmbus
The NVDIMM-N disk driver, scmdisk0101.sys, writes its logs to the Microsoft-Windows-ScmDisk0101 provider. To see them, open Event
Viewer and navigate to Applications and Services Logs -> Microsoft -> Windows -> ScmDisk0101
Following is the example NVDIMM-N Disk
Figure 23. Operational and Diagnostics Logging information: NVDIMM-N Disk
By using the UniqueId or serial number one can identify the NVDIMM-N physical location
Figure 24. NVDIMM-N physical location
Storage Class Memory in Windows Server 2019
NVDIMM-N FW Requirement
Windows Server 2019 requires NVDIMM-N devices to support labels in order for the OS to configure namespaces. NVDIMM-N Firmware
8860 doesn’t have label space functionality and devices with this firmware cannot be configured by Windows Server 2019.
The NVDIMM-N firmware must be updated to FW 9324 or above so that the devices can be successfully configured and used in Windows
Server 2019.
It is also recommended to update BIOS, iDRAC and the Operating System as part of the scheduled update.
Driver Architecture Overview
There are two types of device objects related to persistent memory in Windows Server – Physical NVDIMMs and Logical Persistent
Memory Disks on top of the physical driver.
In Device Manager, physical NVDIMMs appear under "Memory devices", while logical disks are under "Persistent memory disks".
Windows
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