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Exam NS0-163 All Questions

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Exam NS0-163 topic 1 question 56 discussion

Actual exam question from Netapp's NS0-163
Question #: 56
Topic #: 1
[All NS0-163 Questions]

An administrator has presented a thinly provisioned iSCSI LUN to your ESXi host. The administrator deleted data from the datastore in ESXi. No blocks have been freed on the LUN.
What are two of the steps the administrator should use to solve this problem? (Choose two.)

  • A. Use the vmfs unmap command
  • B. Rescan the storage from the host
  • C. Set the volume to thin-provisioned
  • D. Set the space-allocation to enabled\
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Suggested Answer: AD 🗳️

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greg4711
2 weeks, 3 days ago
Selected Answer: AD
Enable space allocation to allow your hosts and storage systems to cooperate on LUN space management. ... A host can perform SCSI UNMAP (sometimes called TRIM) operations: These operations allows a host to identify blocks of data on a LUN that are no longer required because they no longer contain valid data. https://docs.netapp.com/us-en/ontap/san-admin/enable-space-allocation.html
upvoted 1 times
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47b3003
3 weeks ago
Selected Answer: BD
D then B
upvoted 1 times
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FilerGuy
8 months, 2 weeks ago
I don't think vmfs unmap (option A) is correct. Vmfs unmap should only be needed on older datastores that don't support automatic space reclamation and if unmap was being used then none of the other three would be needed. I think this question is referring to the steps for enabling space allocation on thin provisioned LUNs, which include the command to enable it (option D) and rescanning the storage from the host (option B). https://docs.netapp.com/us-en/ontap/san-admin/enable-space-allocation-scsi-thin-provisioned-luns-task.html "The space-allocation option is set to disabled by default, and you must take the LUN offline to enable space allocation. After you enable space allocation, you must perform discovery on the host before the host will recognize that space allocation has been enabled."
upvoted 3 times
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