Onboarded VM failed to power on

Products

• VMware Cloud Director
• VMware vCenter Server 8.0

Issue/Introduction

VM with less CPU reservation configured is not allowed to Power on due to strict reservation in VM hardware version 14 or later.

 

Environment

VCenter 8.x

VM Hardware (H/W) version : 14 or later

Cause

• VM H/W version 13 or lower- in this version, which is relaxed compatibility checks for reservation, so this version allow VM to boot with less than 100% CPU and Memory reservation when Latency sensitivity configured "High".
• VM H/W version 14 or Higher - in this version we have very strict enforcement of resource settings. So, the VM with less reservation treated as under provisioned and will not allow to boot \ Power ON when Latency sensitivity configured "High". You observe error "Invalid CPU reservation for the latency-sensitive VM. Need full CPU reservation:xxxMHz"
  • 

Resolution

We need to configure full CPU and Memory reservation to allow VM to Power ON.

Workaround:

1. In VM settings, navigate to "VM Options"
   1. 
2. Click "Edit Configuration" under "Configuration Parameter"
   1. 
3. Add below parameter and it's value

   1. latency.enforceCpuMin = FALSE

Note: This configuration might lead to reduced performance

      4. Power ON the VM, this should allow the VM less reservation to boot.

Additional Information

Kindly refer document for more information.