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VMware 5V0-21.21 Exam - Topic 2 Question 81 Discussion

An administrator wants to check the performance metrics for the workloads and their virtual disks that are running on a vSAN cluster, but no statistical charts are displayed in the vSphere client.Why is this behavior being seen?
C) vSAN performance service is turned off.
A) vSAN network diagnostic mode is not enabled.
B) vSAN proactive tests haven't been run yet.
D) vSAN performance verbose mode is not enabled.

VMware 5V0-21.21 Exam - Topic 2 Question 81 Discussion

Actual exam question for VMware's 5V0-21.21 exam
Question #: 81
Topic #: 2
[All 5V0-21.21 Questions]

An administrator wants to check the performance metrics for the workloads and their virtual disks that are running on a vSAN cluster, but no statistical charts are displayed in the vSphere client.

Why is this behavior being seen?

Show Suggested Answer Hide Answer
Suggested Answer: C

: Some tools allow for measuring latency peaks. This unfortunately isn't ideal, as it can unfairly represent statistical outliers, which may very well occur when there is little to no I/O activity. The best way to understand the actual behavior of VM and application latencies is to observe in time based performance graphs. Depending on the level of detail, you may need to measure at the individual VMDK level. Become familiar with these graphs to determine what is normal, and what is not for that given application. This is where you can use built-in functionality of vCenter and the vSAN performance service metrics to gather this information.


https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-monitoring.doc/GUID-EF27701E-7BAC-4E76-9D2F-E1C58CAAB06D.html

by Roslyn at Apr 04, 2025, 09:59 AM

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Refugia
6 months ago
Definitely A, network diagnostic mode is often overlooked.
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Dorothy
6 months ago
Wait, is it really that simple? I thought it was more complicated!
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Nohemi
6 months ago
I think it could also be B, proactive tests are important too.
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Dacia
6 months ago
Nah, I doubt it's D, verbose mode isn't usually the issue.
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Delbert
6 months ago
Pretty sure it's option C, performance service needs to be on.
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Mitsue
7 months ago
I thought network diagnostic mode was important, but I can't recall if it affects the performance metrics display. Could it be A?
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Aimee
7 months ago
I'm not entirely sure, but I feel like enabling verbose mode could help with performance details. Is that option D?
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Gennie
7 months ago
I think I saw a question like this in our practice exam. It might be related to proactive tests not being run, so maybe option B?
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Erasmo
7 months ago
I remember something about the performance service needing to be enabled for metrics to show up. Could it be option C?
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Jaclyn
8 months ago
I've got a good feeling about this one. Based on my experience with vSAN, I think the issue is likely related to the performance service or diagnostic mode. I'll carefully evaluate each option to determine the correct answer.
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Vivienne
8 months ago
Okay, let's see. The key here is to identify the specific setting or service that controls the performance metrics display. I'll need to think through the vSAN configuration options to determine the most likely cause.
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Nieves
8 months ago
Hmm, I'm a bit unsure about this one. The question is asking about why the performance charts aren't showing up, so I'll need to consider the different settings and configurations that could be causing that.
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Mariann
8 months ago
This seems like a straightforward question about vSAN performance metrics. I'll need to carefully review the options and think through the potential causes.
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Angella
1 year ago
Well, if the vSAN performance service is turned off, how else are they going to measure how fast their virtual disks are spinning? Time to bust out the good old-fashioned stopwatch!
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Junita
1 year ago
A) vSAN network diagnostic mode is not enabled? Guess the admin's network is still playing hide and seek with the performance data.
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Annice
12 months ago
C) Could be that vSAN proactive tests haven't been run yet.
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Jeannine
12 months ago
B) Maybe the vSAN performance service is turned off.
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Brice
12 months ago
A) vSAN network diagnostic mode is not enabled.
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Tina
1 year ago
D) vSAN performance verbose mode is not enabled? Sounds like someone needs to turn up the volume on their vSAN performance!
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Ben
12 months ago
D) vSAN performance verbose mode is not enabled.
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Cherrie
1 year ago
C) vSAN performance service is turned off.
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Marvel
1 year ago
A) vSAN network diagnostic mode is not enabled.
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Pearlie
1 year ago
Maybe someone forgot to enable vSAN network diagnostic mode as well.
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Malcom
1 year ago
I agree with Irma, that could be why the charts are not showing.
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Aimee
1 year ago
Hmm, maybe B) vSAN proactive tests haven't been run yet. Gotta make sure those tests are good to go before the metrics show up.
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Lucina
11 months ago
I agree, let's check if B) vSAN proactive tests haven't been run yet.
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Anjelica
11 months ago
Actually, it might be D) vSAN performance verbose mode is not enabled.
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Sherell
11 months ago
No, I believe it's A) vSAN network diagnostic mode is not enabled.
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Gail
12 months ago
I think C) vSAN performance service is turned off.
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Dominga
12 months ago
It could be D) vSAN performance verbose mode is not enabled.
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Matthew
12 months ago
I agree with B) vSAN proactive tests haven't been run yet.
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Shenika
12 months ago
Maybe A) vSAN network diagnostic mode is not enabled.
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Aileen
1 year ago
I think C) vSAN performance service is turned off.
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Irma
1 year ago
I think the vSAN performance service is turned off.
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Justine
1 year ago
I think the correct answer is C) vSAN performance service is turned off. Without the performance service, there won't be any statistical charts displayed.
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Edelmira
1 year ago
Yes, that's correct. Without the performance service, the metrics won't be available.
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Stephanie
1 year ago
I agree, the performance service needs to be turned on for the statistical charts to be displayed.
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