vSAN physical adapter performance metrics are not available in NSX-T environment

Products

• VMware NSX
• VMware vSAN

Issue/Introduction

When vSAN is enabled NSX-T Data Center 2.x and 3.x environment, and the vSAN network traffic is based on the NSX-T network, you may experience these symptoms:

• In the vSphere Web Client, the vSAN performance service checks in vSAN health are all green.
• In the vSAN host level performance service User Interface (UI), the tab "Physical Adapters" does not have any metrics data showing up, and there are no available items in the drop-down list "Physical adapter".

Environment

VMware vSAN 6.5.x
VMware vSAN 7.0.x
VMware vSAN 6.7.x
VMware NSX-T Data Center

Cause

This issue occurs due to the vSAN performance User Interface has not handled the NSX-T Data Center environments properly.

Resolution

This is a known issue affecting VMware vSAN 6.5.x, 6.7.x and 7.0.x with NSX-T Data Center environment.

Currently, there is no resolution.

Workaround:
To work around this issue, get the metrics of the physical adapters using the PowerCLI command Get-VsanStats.

For example:

1. Run the PowerCLI command:
   Get-VsanStat -Entity $pnics[0] -StartTime $startTime -EndTime $endTime
2. vsantop application: please log in the host which you want to monitor the metrics of the physical adapter and run the command "/bin/vsantop", and press button 'E' to choose the entity type "vsan-pnic-net".