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D-UN-OE-23 · Question #46

A system administrator must mount a datastore to an ESXi host using NFSv4 with the NFS owner set to change/revoke access permissions. Which permission level must be applied to the NFS datastore?

The correct answer is A. Read/write, enable Root. Option A is correct because mounting an NFS datastore on ESXi requires Read/Write access so the host can store and modify VM data, and Enable Root (no root squash) is required because ESXi connects to NFS as the root user - without this flag, the NFS server squashes root to an…

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Question

A system administrator must mount a datastore to an ESXi host using NFSv4 with the NFS owner set to change/revoke access permissions. Which permission level must be applied to the NFS datastore?

Options

  • ARead/write, enable Root
  • BRead-only, enable Root
  • CRead-only
  • DRead/write

How the community answered

(38 responses)
  • A
    82% (31)
  • B
    5% (2)
  • C
    11% (4)
  • D
    3% (1)

Explanation

Option A is correct because mounting an NFS datastore on ESXi requires Read/Write access so the host can store and modify VM data, and Enable Root (no root squash) is required because ESXi connects to NFS as the root user - without this flag, the NFS server squashes root to an anonymous, unprivileged account, preventing the NFS owner from exercising change/revoke permission control.

Option B fails because Read-only prevents ESXi from writing VM files to the datastore, making it unusable for active workloads despite having Root enabled.

Option C fails on both counts - Read-only blocks write operations, and without Root enabled, the root identity is squashed, eliminating the owner's ability to manage access.

Option D fails because even though Read/Write is correct, omitting Root means the ESXi host's root-level NFS requests get remapped to an unprivileged user, breaking the permission management chain.

Memory tip: Think "RW + Root = Real control" - you need Read/Write to actually use the store, and Root enabled to preserve the owner's authority to revoke access. If Root is squashed, so is the owner's power.

Topics

#NFSv4#NFS permissions#datastore#ESXi host

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