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Exam 3V0-21.21 topic 1 question 61 discussion

Actual exam question from VMware's 3V0-21.21
Question #: 61
Topic #: 1
[All 3V0-21.21 Questions]

An architect is designing a vSphere environment for a customer and learns that the customer has:
✑ A single vSphere cluster
✑ Two storage arrays with different RAID capabilities
Which two design decisions should the architect make to maximize data availability and data performance for this customer? (Choose two.)

  • A. Use Storage DRS.
  • B. Use VMDK anti-affinity rules.
  • C. Use multiple datastores for heartbeat.
  • D. Use a minimum of three storage arrays.
  • E. Use VM to host DRS rules.
Show Suggested Answer Hide Answer
Suggested Answer: AC 🗳️
by lobana at June 22, 2021, 10:41 a.m.

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nemisis95
Highly Voted 2 years, 10 months ago
A. Use Storage DRS. B. Use VMDK anti-affinity rules. Storage DRS would satisfy data availability. VMDK anti-affinity rules would satisfy "different RAID capabilities" and "data performance.
upvoted 13 times
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FR_Wolfman
Most Recent 3 months ago
Selected Answer: AB
A : Storage DRS is the first thing to set to maximize data availability/performance B : This one is tricky, but I chose it after eliminating the other options. We have 2 storage arrays with different RAID capabilities : that means the stored data may not be protected the same way and with the same performances. We have to assume they are equivalent. C : datastore heartbeats are used by vSphere HA, to detect hosts isolation. It won’t help to maximize data availability/performance D : it could help, but will need investments
upvoted 1 times
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hamadakota
4 months, 3 weeks ago
I agree with answer: A,B
upvoted 1 times
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IronMtn
8 months, 2 weeks ago
Selected Answer: AB
Agree with nemisis95 for the same reasons
upvoted 1 times
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andr3
10 months, 2 weeks ago
what about using 3 storage arrays, why no one is taking this into consideration ?
upvoted 1 times
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gmalan
10 months, 3 weeks ago
A&B ..The Datastore Hearbeating enables to avoid false restarting of VMs in case only a management network has failed
upvoted 1 times
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Alchot
1 year, 2 months ago
Selected Answer: AC
A. Use Storage DRS This to be used for each DS created on each array for: anti-affinity rules and balancing capacity and performance C. Use multiple datastores for heartbeat. This to ensure availability of storage across both arrays. Select DS from each array for heartbeat.
upvoted 1 times
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bpexam
1 year, 9 months ago
Selected Answer: AB
Correct answer: A,B
upvoted 1 times
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Aolivera
2 years, 5 months ago
I don’t see any possible solution to this question. A is not as storage arrays are different raid as per https://kb.vmware.com/s/article/2149938 What are some of the major best practices while configuring a Storage DRS cluster? Group disk with similar characteristics (RAID-1 with RAID-1, replicated with replicated, 15k RPM with 15k RPM) i.e. Identical storage profiles.
upvoted 1 times
c11
1 year, 10 months ago
One datastore LUN can have multiple disks. Group disks means disks in the same datastore. It's not suggesting to keep disks from different datastore at the same RAID level.
upvoted 1 times
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JLF_VMW
2 years, 8 months ago
I think is A and E. We all agree on A, But i think in E because of this: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.resmgmt.doc/GUID-FF28F29C-8B67-4EFF-A2EF-63B3537E6934.html#:~:text=An%20affinity%20rule%20specifies%20that,a%20specific%20host%20DRS%20group. Used to specify affinity or anti-affinity between individual virtual machines. A rule specifying affinity causes DRS to try to keep the specified virtual machines together on the same host, for example, for performance reasons. With an anti-affinity rule, DRS tries to keep the specified virtual machines apart, for example, so that when a problem occurs with one host, you do not lose both virtual machines.
upvoted 2 times
JLF_VMW
2 years, 8 months ago
Always talk about data perfomanece, you are right, is A and B
upvoted 1 times
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lobana
2 years, 10 months ago
Correct answer: A,B
upvoted 3 times
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