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.. _int: https://docs.python.org/2/library/stdtypes.html
.. _vSphere API 4.0: ../../vim/version.rst#vimversionversion5
.. _cpuFailoverResourcesPercent: ../../vim/cluster/FailoverResourcesAdmissionControlPolicy.rst#cpuFailoverResourcesPercent
.. _memoryFailoverResourcesPercent: ../../vim/cluster/FailoverResourcesAdmissionControlPolicy.rst#memoryFailoverResourcesPercent
.. _vim.cluster.DasAdmissionControlPolicy: ../../vim/cluster/DasAdmissionControlPolicy.rst
.. _ClusterFailoverLevelAdmissionControlPolicy: ../../vim/cluster/FailoverLevelAdmissionControlPolicy.rst
.. _ClusterFailoverResourcesAdmissionControlPolicy: ../../vim/cluster/FailoverResourcesAdmissionControlPolicy.rst
vim.cluster.FailoverResourcesAdmissionControlPolicy
===================================================
The `ClusterFailoverResourcesAdmissionControlPolicy`_ reserves a specified percentage of aggregate cluster resources for failover. With the resources failover policy in place, vSphere HA uses the following calculations to control virtual machine migration in the cluster.
* Calculate the total resource requirements for all powered-on virtual machines in the cluster.
* Calculate the total host resources available for virtual machines.
* Calculate the Current CPU failover capacity and current memory failover capacity for the cluster.
* Compare the current CPU failover capacity and current memory failover capacity with the configured resource percentages (
* `cpuFailoverResourcesPercent`_
* and
* `memoryFailoverResourcesPercent`_
* ). If either current capacity is less than the corresponding configured capacity, HA does not allow the operation.
*
* HA uses the actual reservations of the virtual machines. If a virtual machine does not have reservations, meaning that the reservation is 0, a default of 0MB memory and 256MHz CPU is applied. This is controlled by the same HA advanced options used for the failover level policy (
* `ClusterFailoverLevelAdmissionControlPolicy`_
* ).
:extends: vim.cluster.DasAdmissionControlPolicy_
:since: `vSphere API 4.0`_
Attributes:
cpuFailoverResourcesPercent (`int`_):
Percentage of CPU resources in the cluster to reserve for failover. You can specify up to 100% of CPU resources for failover.
memoryFailoverResourcesPercent (`int`_):
Percentage of memory resources in the cluster to reserve for failover. You can specify up to 100% of memory resources for failover.
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