Home » VMware » 2V0-621 v.2 » Which two scenarios would cause a Fault Tolerance-enabled virtual machine to fail to power the Secondary virtual machine?
Which two scenarios would cause a Fault Tolerance-enabled virtual machine to fail to power the Secondary virtual machine? (Choose two.)
A. The host has entered a Network Partitioned state.
B. vSphere High Availability (HA) is disabled on the host cluster.
C. Enhanced vMotion Compatibility (EVC) is enabled on the host cluster.
D. vSphere Distributed Power Management (DPM) is enabled on the host cluster.
Correct Answer: AB
Explanation/Reference:
Explanation:
A-) This issue occurs when the SSL certificate thumbprint presented to the master host is not what the master host is expecting. This is indicated by the thumbprint mismatch error in the fdm.log file of the master host https://kb.vmware.com/selfservice/microsites/search.do? language=en_US&cmd=displayKC&externalId=2012649
In general terms, a second virtual machine is created to work in tandem with the virtual machine on which you have enabled Fault Tolerance. This virtual machine resides on a different host in the cluster and runs in virtual lockstep with the primary virtual machine. When a failure is detected, the second virtual machine takes the place of the first one with the least possible interruption of service. More specific information about how this is achieved can be found in the Protecting Mission-Critical Workloads with VMware Fault Tolerance whitepaper.
B-) You may need to complete this process for multiple clusters. VMware HA can be disabled only if there are no virtual machines with VMware Fault Tolerance
(FT) enabled. If there are virtual machines with VMware FT enabled in the cluster you are disabling, turn off VMware FT before disabling VMware HA. The process of turning off VMware FT is described in Disabling or Turning Off VMware FT (1008026) .
Note: Virtual Machine Monitoring will also be disabled when HA is disabled.