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If the Primary level of failures to tolerate policy is changed from 2 to 3 without shutting down the virtual machine, what will happen when the policy is applied?
A. It will fail with an alert. Primary level of failures to tolerate=3 is not supported with mirroring.
B. It will fail with an alert. The policy of a running VM cannot be dynamically changed.
C. vSAN will try to create an additional mirror of the VM’s disk components, as long as there is a sufficient number of fault domains and available capacity.
D. vSAN will switch its failure to tolerate method for any VMs with that policy, to optimize for space. Primary level of failures to tolerate=3 can only be accomplished with erasure coding.
Correct Answer: C
Explanation/Reference:
Explanation:
Incorrect Answers:
D: RAID 5 or RAID 6 erasure coding does not support a Primary level of failures to tolerate value of 3.
Note: Primary level of failures to tolerate
Defines the number of host and device failures that a virtual machine object can tolerate. For n failures tolerated, each piece of data written is stored in n+1 places, including parity copies if using RAID 5 or RAID 6.
When provisioning a virtual machine, if you do not choose a storage policy, vSAN assigns this policy as the default virtual machine storage policy.
If fault domains are configured, 2n+1 fault domains with hosts contributing capacity are required. A host, which is not part of any fault domain is considered its own single-host fault domain.
Default value is 1. Maximum value is 3.
References: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-08911FD3-2462-4C1C-AE81-0D4DBC8F7990.html
C