File deletions from a SAN-attached host that is using Windows Server 2016 are not freeing up space in LUN lun3. Referring to the exhibit, which setting is preventing the SCSI UNMAP operation?

The correct answer is D. Space Allocation is set to disabled. For clustered Data ONTAP, support for SCSI UNMAP begins in the 8.2 release family. For a LUN to advertise support for and accept SCSI UNMAP commands, enable the space-allocation option on LUNs which you expect to use this feature with.

ONTAP SAN Solution Troubleshooting

Question

Options

ASpace reservation honored is set to false
BSpace reservation is set to disabled
CClone Autodelete Enabled is set to false
DSpace Allocation is set to disabled

How the community answered

(54 responses)

A
6% (3)
B
11% (6)
C
4% (2)
D
80% (43)

Explanation

For clustered Data ONTAP, support for SCSI UNMAP begins in the 8.2 release family. For a LUN to advertise support for and accept SCSI UNMAP commands, enable the space-allocation option on LUNs which you expect to use this feature with.

Topics

#SCSI UNMAP#space allocation#thin provisioning#space reclamation

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