Exam 3V0-21.21 topic 1 question 85 discussion

Actual exam question from VMware's 3V0-21.21

Question #: 85
Topic #: 1

A VMware Service Provider is tasked with delivering a solution for continuous availability for a subset of Tier 1 virtual machines (VMs) and vApps running in their vSAN environment. The VMs make up a mission-critical application and there can be no data loss in the event of an outage at their primary data center. In the event of a regional outage, they have established a 10-minute recovery point objective (RPO). Failover/failback to the third site must be automated.
They have the following in place:
✑ Two local data centers (primary and secondary) connected with 100 Gb dedicated fiber
- 2ms round-trip time (RTT) latency between the sites
✑ A third data center located on another power grid
- 70ms latency between the primary and secondary data centers
✑ Matching storage arrays at all locations
Which two solutions could be used to meet the requirements? (Choose two.)

A. Site Recovery Manager
B. Snapshots
C. vSAN Metro Cluster
D. vSphere Data Protection
E. vStorage APIs for Array Integration (VAAI)

Show Suggested Answer

Suggested Answer: AC 🗳️

by nemisis95 at June 14, 2021, 10:36 a.m.

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nemisis95

Highly Voted 1 year, 6 months ago

A. Site Recovery Manager C. vSAN Metro Cluster

upvoted 19 times

hansel

1 year, 5 months ago

Agreed, A & C

upvoted 5 times

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mvojka1990

Most Recent 8 months, 1 week ago

Metro is a stretched-cluster, vSAN tolerates 5ms to main sites first-second and 150ms to a third site where a witness vm will stay, all details are correct till now. Matching storage arrays at all locations seems to be, or its a single datastore presented to infrastructure itself. As the third site has an infrastructure established as well can be used to replicate VMs from the stretched datastore from first-second, the need of Site Recovery. So A and C.

upvoted 1 times

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d3iyu

8 months, 1 week ago

Selected Answer: AC

Witness to Site -- less than 100msec; 200msec is acceptable https://www.delltechnologies.com/asset/en-us/products/converged-infrastructure/technical-support/vxrail-stretched-cluster-planning-guide-for-7-0.pdf - a latency of less than or equal to 100 milliseconds is preferred.

upvoted 3 times

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Carlitos

11 months, 3 weeks ago

Answers> A and C. https://blogs.vmware.com/virtualblocks/2016/07/28/srm-multisite/#:~:text=SRM%20and%20stretched%20clusters%2C%20either,sites%20in%20a%20stretched%20cluster.

upvoted 1 times

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Aolivera

11 months, 4 weeks ago

Can anyone give me a link to Vsan metro cluster? I never heard of it. :) Link is 70ms between 1,2 sites and 3rd site My choice is A and E as they have matching storage. They are adding Vsan in the mix which makes none of the B C or D possible. If they want to use Vsan, then replication should be done with sphere replication, but it is not on the list of valid answers. I think this questions need rewording

upvoted 1 times

mnq59986

9 months, 1 week ago

Not under that name, but you are able to build alike "vsan metro cluster". As they already have vSAN moving to non-vsan solution might not be an option. But your point is right, vmware is talking only about metro in conjunction with traditional storage - https://core.vmware.com/resource/vmware-vsphere-metro-storage-cluster-vmsc and with no mention of vSan. But from the same document, 70ms RTT to 3rd site might not be enough. But it's ok for vSan withess.

upvoted 1 times

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Helpinghanditexams

1 year, 4 months ago

Correct Answer : A, C

upvoted 1 times

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primanturin

1 year, 5 months ago

AC https://core.vmware.com/resource/vsan-stretched-cluster-guide#section1

upvoted 4 times

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