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Which new feature in vSphere 6.5 would cause this?

An administrator notices that a host is evacuating all virtual machines and entering maintenance mode even
though the host appears to be up and running.
Which new feature in vSphere 6.5 would cause this?

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A.
Predictive DRS

B.
EVC Mode

C.
vCenter HA

D.
Proactive HA

10 Comments on “Which new feature in vSphere 6.5 would cause this?”

  4. vcsp says:

    Proactive HA
    Proactive HA will detect hardware conditions of a host and allow you to evacuate the VMs before the issue causes an outage. Working in conjunction with participating hardware vendors, vCenter will plug into the hardware monitoring solution to receive the health status of the monitored components such as fans, memory, and power supplies. vSphere can then be configured to respond according to the failure.

    Once a component is labeled unhealthy by the hardware monitoring system, vSphere will classify the host as either moderately or severely degraded depending on which component failed. vSphere will place that affected host into a new state called Quarantine Mode. In this mode, DRS will not use the host for placement decisions for new VMs unless a DRS rule could not otherwise be satisfied. Additionally, DRS will attempt to evacuate the host as long as it would not cause a performance issue. Proactive HA can also be configured to place degraded hosts into Maintenance Mode which will perform a standard virtual machine evacuation.




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  5. VSAN says:

    Proactive HA will detect hardware conditions of a host and allow you to evacuate the VMs before the issue causes an outage. Failure happens at the most inopportune times. It’s possible that degraded hardware goes on for minutes, hours, or even days and when it eventually fails, workloads need to be HA restarted. In reality, if only vCenter or the administrator had known, it could have kept the workloads from failing!

    Proactive HA can respond to different types of failures. Currently, there are five failure events that it uses.

    – Power Supply.
    – Memory.
    – Fan.
    – Storage.
    – Network.




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  6. VSAN says:

    https://4.bp.blogspot.com/-TH6p-Y5VZxE/WQc9_K0BdTI/AAAAAAAADQg/-RoAu7MxuY8jbp1lnJBKo4LXeinBOtT1QCLcB/s1600/11.PNG

    https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.avail.doc/GUID-3E3B18CC-8574-46FA-9170-CF549B8E55B8.html

    Quarantine mode for all failures:
    Balances performance and availability, by avoiding the usage of partially degraded hosts provided that virtual machine performance is unaffected.

    Quarantine mode for moderate and Maintenance mode for severe failure (Mixed):
    Balances performance and availability, by avoiding the usage of moderately degraded hosts provided that virtual machine performance is unaffected. Ensures that virtual machines do not run on severely failed hosts.

    Maintenance mode for all failures:
    Ensures that virtual machines do not run on partially failed hosts.




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