ONTAP thin LUN with VMWare does not auto reclaim space
Applies to
- ONTAP 9
- VMware ESXi
- VMFS6
Issue
- After space allocation has been enabled to advertise to VMware the LUN is thin provisioned automatic and legacy space reclamation through SCSI UNMAP /TRIM does not free the expected space.
- LUN recognised as thin provisioned but space reclamation does not occur
esxcli storage core device vaai status get -d naa.xyz
ATS Status: supported
Clone Status: supported
Zero Status: supported
Delete Status: supported