You can tune resource reservations on an NSX Edge VM appliance. By default, 100% resources are allocated to an NSX Edge VM. Flexibility to change resource reservations avoids the need to add additional capacity to the vCenter Server and the need to reduce current reservations on other non-Edge VMs.

Prerequisites

  • Verify that the cluster has sufficient capacity to avoid failures.

Procedure

  1. With admin privileges, log in to NSX Manager.
  2. Select System > Fabric > Nodes > Edge Transport Nodes.
  3. Select the NSX Edge transport node.
  4. Click Actions > Change Edge VM Resource Reservations.
  5. In the Change Edge VM Resource Reservations window, you can customize the existing resource allocation applied to the Edge transport node.
    Action Description
    CPU Reservation Priority Low - 2000 shares

    Normal - 4000 shares

    High - 8000 shares

    Extra High - 10000 shares
    Memory Reservation (%)

    Reservation percentage is relative to the pre-defined value in the form factor.

    100 indicates 100% of memory is reserved for the NSX Edge VM.

    If you enter 50, it indicates that 50% of memory is assigned to the Edge transport node.
    CPU Reservation (MHz)

    Enter CPU reservation in MHz.

    The maximum amount of MHz is equal to the number of vCPUs multiplied by the normal CPU operation rate of the physical CPU core.

    Note: If the MHz value entered exceeds the maximum CPU capacity of the physical CPU cores, the NSX Edge VM might fail to start even though the allocation was accepted.
  6. Click Save.

    If changes made to the resource reservations do not take effect, you might need to reboot the NSX Edge VM from VMware vCenter.

    The NSX Edge VM appliance autostarts on ESXi host reboot provided the NSX Edge cluster has vSphere HA turned off. For more details on vSphere HA, see the vSphere documentation.