Exam 5V0-21.19 topic 1 question 31 discussion

The answer D is correct: https://docs.vmware.com/en/VMware-vSphere/6.5/com.vmware.vsphere.virtualsan.doc/GUID-04ED9C07-BC61-4E3C-9188-9D2E460C9CA3.html

is correct

D for sure

D is the correct answer. vSAN initiates resynchronization either when a hardware device, host, or network fails, or a host is placed into maintenance mode in the vSAN cluster. Resynchronization triggers: • Editing a VM storage policy • Restarting a host after a failure • Recovering hosts from a permanent or long-term failure (60 minutes by default) • Evacuating data by using the Full data migration mode before placing a host in maintenance mode • Exceeding the capacity threshold of a capacity device (threshold level of 80%) So changing the Failure Tolerance Method is to change the VM storage policy. Taken from vSAN 6.7 Deploy and Manage Lecture Manual - Resynchronizing Components Section

D is the correct answer. vSAN initiates resynchronization either when a hardware device, host, or network fails, or a host is placed into maintenance mode in the vSAN cluster. Resynchronization triggers: • Editing a VM storage policy • Restarting a host after a failure • Recovering hosts from a permanent or long-term failure (60 minutes by default) • Evacuating data by using the Full data migration mode before placing a host in maintenance mode • Exceeding the capacity threshold of a capacity device (threshold level of 80%) Taken from vSAN 6.7 Deploy and Manage Lecture Manual - Resynchronizing Components Section

D is the most obvious, but A and B are both listed in various places. Bad question.

I'll go with D (but it could also be B) VMworld 2019 Session "HCI3450BE vSAN best practices" => Which policy changes require a rebuild? (Slide 43) - increasing/decreasing stripe width - changing RAID protection aka FTM (RAID1-to/from-5/6, RAID5-to/form-6) - increasing the object space reservation (OSR can only be 0% or 100% when deduplication is enabled)

I would say the right answer could be A https://cormachogan.com/2018/02/21/policy-changes-can-trigger-rebuild-vsan/ Enabling Object Checksum results on a component resync