Exam 5V0-21.20 topic 1 question 7 discussion

Actual exam question from VMware's 5V0-21.20

Question #: 7
Topic #: 1

During planned maintenance of a four-node vSAN cluster, an outsourced IT contractor accidentally removed a 2.5" SSD cache disk from one of the vSAN nodes.
The storage policy has been configured with FTT=1 RAID 1, and the disk management UI marked the disk group as absent.
Which remediation steps should the administrator select to ensure VMs become compliant with the storage policy as soon as possible?

A. replace the SSD cache disk > rescan > add disk back in disk group
B. enter host in maintenance > remove from disk group > shutdown host > replace disk > power on host
C. remove disk group > enter host in maintenance > fully evacuate all data > exit maintenance
D. vSAN Health Check > retest > object health > repair objects immediately

Show Suggested Answer

Suggested Answer: A 🗳️

by DSA at Feb. 24, 2021, 1:10 p.m.

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Lazylinux

3 years, 6 months ago

D is correct => FTT=1 RAID 1 only need 3 hosts but we have 4 hosts then we have 1 extra host to rebuild on

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MosabSh

3 years, 6 months ago

D: a host will be absent for longer than 60 minutes. The affected VMs are still accessible however non-compliant with their storage policies. More importantly in the case of FTT=1, until a rebuild occurs vSAN will not be able to tolerate additional failures. If this is the case, you may choose to repair the objects immediately. This option will resynchronize the absent objects on available hosts in the vSAN cluster.

upvoted 1 times

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wpjoulekkading

4 years ago

D no need to put host into maintenance mode or remove the disk group. Just put disk back into the host, do vSAN health check and click on the repair objects button.

upvoted 2 times

Lazylinux

3 years, 6 months ago

Your explanation is wrong, as D dont mention put disk back!! now since we have 4 hosts and FTT=1 RAID 1 only need 3 hosts then we have 1 extra host to rebuild on and hence answer D

upvoted 1 times

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Rabbit117

4 years, 3 months ago

I think D is correct. https://blogs.vmware.com/virtualblocks/2017/11/09/understanding-vsan-rebuilds/#:~:text=Repair%20Objects%20Immediately&text=More%20importantly%20in%20the%20case,hosts%20in%20the%20vSAN%20cluster.

upvoted 2 times

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DSA

4 years, 4 months ago

Should be D imho. The question is to asap get the VMs compliant. Not on how the Disk is changed. And the real question should be: Should this Administrator work in IT? ^^

upvoted 4 times

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