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Thinly Provisioned LUN is not reclaiming free space
https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/Thinly_Provisioned_LUN_is_not_reclaiming_free_space
Applies to ONTAP 9 Thin provisioning Space Allocation Space Reclaim Issue LUN space discrepancy between the host and ONTAP Thinly provisioned volume and LUN Space reclamation is not occurring.

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