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VMware 5V0-21.21 Exam - Topic 6 Question 96 Discussion

A customer is planning to deploy a vSAN cluster to host their in-house distributed ERP system. The hardware specifications for their server nodes include:* 2 x Intel Xeon CPU E5-2697 v3 @ 2.60GHz* 1TB memoryWhich boot device is supported for the vSAN ESXi nodes for this customer?
A) A 16GB single-level cell (SLC) SATADOM device must be used.
B) A 4GB USB or SD device must be used.
C) A 16GB multiple-level cell (MLC) SATADOM device must be used.
D) ESXi Hosts must boot from a PMEM device.

VMware 5V0-21.21 Exam - Topic 6 Question 96 Discussion

Actual exam question for VMware's 5V0-21.21 exam
Question #: 96
Topic #: 6
[All 5V0-21.21 Questions]

A customer is planning to deploy a vSAN cluster to host their in-house distributed ERP system. The hardware specifications for their server nodes include:

* 2 x Intel Xeon CPU E5-2697 v3 @ 2.60GHz

* 1TB memory

Which boot device is supported for the vSAN ESXi nodes for this customer?

Show Suggested Answer Hide Answer
Suggested Answer: A

If the memory of the ESXi host has 512 GB of memory or less, you can boot the host from a USB, SD, or SATADOM device. If the memory of the ESXi host has more than 512 GB, consider the following guidelines. * You can boot the host from a SATADOM or disk device with a size of at least 16 GB. When you use a SATADOM device, use a single-level cell (SLC) device. https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-planning.doc/GUID-B09CE19D-A3F6-408C-AE69-35F65CBE66E1.html


by Carry at May 15, 2026, 12:53 AM

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Lashanda
4 days ago
Definitely going with option B! Makes the most sense.
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Ellsworth
9 days ago
A 4GB USB or SD device is usually fine for booting ESXi.
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Lynda
14 days ago
Surprised there's no mention of NVMe options for booting!
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Patti
19 days ago
I think option D is a bit much for this setup.
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Rodrigo
25 days ago
Wait, are we really considering a 16GB SLC SATADOM? Seems overkill.
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Jonelle
30 days ago
Definitely going with option B! Makes sense.
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Dominga
1 month ago
A 4GB USB or SD device is usually fine for booting ESXi.
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Leota
1 month ago
I remember reading that MLC SATADOMs are sometimes used, but I’m confused about whether they meet the vSAN requirements.
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Margarett
2 months ago
I’m not entirely sure, but I think PMEM devices are more for high-performance scenarios, not necessarily for standard vSAN booting.
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Tamie
2 months ago
I practiced a similar question about boot devices for ESXi, and I feel like USB or SD devices were often mentioned as acceptable options.
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Oneida
2 months ago
I think the boot device options are pretty specific, but I can't remember if the SLC SATADOM is a requirement for vSAN.
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Chaya
2 months ago
I recall that PMEM devices are usually for performance, not necessarily for booting ESXi, so I’m leaning towards the USB option too.
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Alecia
2 months ago
I practiced a similar question, and I think the 4GB USB option could be the right choice since it's often used for booting.
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Nathalie
2 months ago
I'm not entirely sure, but I feel like the SLC SATADOM might be overkill for just booting ESXi.
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Mila
4 months ago
I think the boot device options are pretty specific, but I remember something about USB or SD devices being common for ESXi hosts.
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