What is the formula for determining the minimum number of vSAN hosts in a cluster necessary to support a Failures To Tolerate (FTT) policy, where FTT=n?
Suggested Answer:C🗳️
To tolerate n failures, you need 2n + 1 ESXi host in the vSAN cluster. Reference: https://searchvmware.techtarget.com/answer/How-can-a-VM-storage-policy-improve-vSAN-cluster-redundancy
C is correct.
"Minimum host requirements for mirroring as a failure tolerance method used an algorithm of 2n+1 where an is the number of Failures to Tolerate."
https://storagehub.vmware.com/t/vsan-space-efficiency-technologies/host-requirements-1/
C is correct.
• For n failures that are tolerated, n+1 copies of the object are created.
• For n failures that are tolerated, 2n+1 hosts contributing storage are required.
• Default value: 1.
Taken from vSAN 6.7 Deploy and Manage Lecture Manual - Level of Failures to Tolerate section
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