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ESX/ESXi error: The host does not have sufficient memory resources to satisfy the reservation (2005073)

Symptoms

  • Cannot power on any virtual machines on a specific host in vCenter Server.
  • Cannot vMotion virtual machines onto a specific one host.
  • In both instances, you see the error:

    The host does not have sufficient memory resources to satisfy the reservation.

  • This error occurs even though the host and resource pool(s) have sufficient resources.

Cause

High Availability (HA) admission control is enabled and set to Specify a failover host and this particular host is reserved for HA failover.
 
If a host is reserved for the purpose of HA failover, it cannot be used to host any other virtual machines.


Resolution

To resolve this issue, perform one of these options: 
  • Disable HA Admission Control:
    1. Right-click the cluster in vCenter Server and choose Edit Settings.
    2. Click VMware HA in the right menu.
    3. Select Disable: Power on VMs that violate availability constraints.

  • Choose another host for HA Failover:
    1. Right-click the cluster in vCenter Server and choose Edit Settings.
    2. Click VMware HA in the right menu.
    3. Edit Specify a failover host and select another host.

  • Choose another HA admission control policy:
    1. Right-click the cluster in vCenter Server and choose Edit Settings.
    2. Click VMware HA in the right menu.
    3. Select:
      • Host failures cluster tolerates and specify a number.

        Or

      • Percentage of cluster resources reserved as failover spare capacity and specify a percentage.

Additional Information

For more information, see Creating and Using VMware HA Clusters in the vSphere 4.1 Availability Guide.
For more information, see Creating and Using vSphere HA Clusters in the vSphere 5.0 Availability Guide.
For more information, see Creating and Using vSphere HA Clusters in the vSphere 5.1 Availability Guide.

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