Yesterday I have upgraded one standalone esxi host from 6.0 to 6.5.0 Update 2 (Build 10175896). After upgrading when i login on it through ui I saw below warning
Is it safe to ignore it? Could anyone please suggest something how should I handle this warning message.
You need to enable ESXi Side-Channel-Aware Scheduler to mitigate this issue.
Please refer to KB, VMware Knowledge Base
Go to resolution point and check below 3 phases.
1. Update Phase: Apply vSphere Updates and Patches - You already applied.
2. Planning Phase: Assess Your Environment - Refer to analyze.
3. Scheduler-Enablement Phase: Enable the ESXi Side-Channel-Aware Scheduler - Refer to analyze and execute accordingly.
To add what vijay said, please be infromed that your hyper-threading will be disabled and you will end up with the less logical processors..
Check for the hardware capacity and act accordingly or suppress the alerts.