Which two operations does the PowerStore NAS VAAI plug-in support? (Choose two.)

Question

Options

• ASpace Reclaim
• BQuota Exceeded Behavior
• CReserve space
• DAtomic Test and Set
• EExtended Statistics

• A
  2% (1)
• B
  4% (2)
• C
  93% (43)

Explanation

PowerStore's NAS VAAI plug-in supports Reserve Space (C) and Extended Statistics (E) - two primitives specifically designed for NFS/NAS datastores in VMware environments. Reserve Space allows ESXi hosts to pre-allocate storage on a NAS datastore so virtual disk space is guaranteed upfront. Extended Statistics enables the array to report detailed capacity and performance metrics back to vSphere, giving administrators richer datastore visibility.

Why the distractors are wrong:

• A (Space Reclaim): This is a block/VMFS VAAI primitive (SCSI UNMAP), not applicable to NAS.
• B (Quota Exceeded Behavior): Not a VAAI primitive at all - quota management is handled at the NAS/filesystem level independently.
• D (Atomic Test and Set): ATS is a VAAI-SCSI block primitive used for VMFS metadata locking; it has no NAS equivalent.

Memory tip: Think "RE" for NAS VAAI - Reserve space and Extended statistics. NAS VAAI is about reserving capacity and extending what vSphere can see. Block-centric primitives like ATS and SCSI UNMAP (Space Reclaim) are dead giveaways for wrong answers on NAS questions.

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