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All paths for LUN show Active I/O for VMware hosts
https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/All_paths_for_LUN_show_Active_I_O_for_VMware_hosts
Applies to VMware ESXI 6.X VMware ESXI 7.X ONTAP 9.X FAS, AFF, ASA Issue When reviewing LUN paths through VMware ESXI all paths shows they are set to Active I/O
After volume move and node unjoin performed in ONTAP cluster LUNs not accessible
https://kb.netapp.com/on-prem/ontap/da/SAN/SAN-KBs/After_volume_move_and_node_unjoin_performed_in_ONTAP_cluster_LUNs_not_accessible
Applies to ONTAP 9 Selective LUN Mapping(SLM) Issue After performing an unjoin of 2 ONTAP nodes from a 4 node cluster LUNs are no longer accessible
How to disable Selective Lun Mapping in Data ONTAP
https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/How_to_disable_Selective_Lun_Mapping_in_Data_ONTAP
Applies to ONTAP 9 Data ONTAP 8 Description Selective Lun Mapping (SLM) is enabled by default, per NetApp's best practices.