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    • Node storage pool refresh fails after ONTAP Select Deploy and cluster upgrade
      https://kb.netapp.com/on-prem/ontap/ontap-select/Select-KBs/Node_storage_pool_refresh_fails_after_ONTAP_Select_Deploy_and_cluster_upgrade
      After an ONTAP Select Deploy and cluster upgrade, an attempt to refresh the cluster via the CLI fails with the following messages: When clicking on the Hypervisor Hosts tab in the Deploy GUI, it displ...After an ONTAP Select Deploy and cluster upgrade, an attempt to refresh the cluster via the CLI fails with the following messages: When clicking on the Hypervisor Hosts tab in the Deploy GUI, it displays a message that the hosts were not found and shows the following: When running the ‘host remove’ command to remove and re-add the host(s), you receive the following: NetApp ONTAP Select Deploy, cluster nodes, and ESXi hosts were migrated to a new VMware vCenter server in a different domain.
    • Weekly SPARES_LOW error for a Flash Pool or Storage Pool aggregate
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Weekly_SPARES_LOW_error_after_upgrading_to_ONTAP_9.7_for_a_Flash_Pool_aggregate
      Flash Pool / Storage Pool Aggregate (Hybrid aggregate) After upgrading ONTAP to 9.7P14, the system triggers a warning once per week: Aggregate data_aggr (online, mixed_raid_type, hybrid) (block checks...Flash Pool / Storage Pool Aggregate (Hybrid aggregate) After upgrading ONTAP to 9.7P14, the system triggers a warning once per week: Aggregate data_aggr (online, mixed_raid_type, hybrid) (block checksums) RAID group /data_aggr/plex0/rg1 (normal, block checksums, raid4) RAID group /data_aggr/plex0/rg2 (normal, block checksums, raid4) RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) No spare drives available for the RAID groups with SSDs
    • Why do nodes report SPARES_LOW during an upgrade?
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Why_do_nodes_report_SPARES_LOW_during_an_upgrade
      When there is one whole, unpartitioned SSD spare for Storage Pool assigned to only one node, you can receive this alert during takeover events as the takeover node replays the events for the node that...When there is one whole, unpartitioned SSD spare for Storage Pool assigned to only one node, you can receive this alert during takeover events as the takeover node replays the events for the node that is rebooting. However, if the Storage Pool provides allocation units only to hybrid aggregates that are owned by one of the nodes in the HA pair, then the SSD spare must be owned by that same node.
    • Storage Pool Create fails Error:  Sharing disk is not enabled on Node 1 add Node 2
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Storage_Pool_Create_fails_Error__Sharing_disk_is_not_enabled_on_Node_1_add_Node_2
      Applies to ONTAP 9 Cluster Data ONTAP 8 Issue Unable to create a storage pool via CLI - GUI Example Error observed: Cluster1::*> storage pool create -storage-pool <Pool Name> -nodes <Node1 Name>,<Part...Applies to ONTAP 9 Cluster Data ONTAP 8 Issue Unable to create a storage pool via CLI - GUI Example Error observed: Cluster1::*> storage pool create -storage-pool <Pool Name> -nodes <Node1 Name>,<Partner Node2 Name> -disk-count 11 - -disk-size -simulate Cluster1::*> storage pool create -storage-pool <Pool Name> -nodes <Node1 Name>,<Partner Node2 Name> -disk-count 11 -simulate Error: command failed: Sharing disk is not enabled on "<Node1 Name>" and "<Partner Node2 Name>".
    • Not enough spare disks for hybrid aggregate during takeover
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Not_enough_spare_disks_for_hybrid_aggregate_during_takeover
      Aggregate aggregate_name (online, mixed_raid_type, hybrid) (block checksums) RAID group /aggregate_name/plex0/rg0 (normal, block checksums, raid_dp) RAID group /aggregate_name/plex0/rg1 (normal, block...Aggregate aggregate_name (online, mixed_raid_type, hybrid) (block checksums) RAID group /aggregate_name/plex0/rg0 (normal, block checksums, raid_dp) RAID group /aggregate_name/plex0/rg1 (normal, block checksums, raid_dp) RAID group /aggregate_name/plex0/rg2 (normal, block checksums, raid4) RAID group /aggregate_name/plex0/rg3 (normal, block checksums, raid4) Just one spare SSD disk available in one node and RAID minimum spare count option set to 1 in both:
    • No Spares Low warning generated for hybrid aggregate
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/No_Spares_Low_warning_generated_for_hybrid_aggregate
      Applies to ONTAP Shared Storage Pool Flash Pool (hybrid aggregate) Issue All SSDs are used to create a Shared Storage Pool - no SSD is left for the spare disk pool. Yet, no event indicating "Spares_Lo...Applies to ONTAP Shared Storage Pool Flash Pool (hybrid aggregate) Issue All SSDs are used to create a Shared Storage Pool - no SSD is left for the spare disk pool. Yet, no event indicating "Spares_Low" is triggered.
    • storage pool in degraded status after disk replace and re-seat
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/storage_pool_in_degraded_status_after_disk_replace_and_re-seat
      Reason for Storage Pool Being Unhealthy: Storage pool has more number of disks than expected. Storage Pool RAID groups and SSDs without errors: data 0a.00.2P1 0a 0 2 SA:A 0 SSD N/A 95312/195200512 953...Reason for Storage Pool Being Unhealthy: Storage pool has more number of disks than expected. Storage Pool RAID groups and SSDs without errors: data 0a.00.2P1 0a 0 2 SA:A 0 SSD N/A 95312/195200512 95320/195216896 data 0a.00.2P2 0a 0 2 SA:A 0 SSD N/A 95312/195200512 95320/195216896 data 0a.00.2P3 0a 0 2 SA:B 0 SSD N/A 95312/195200512 95320/195216896 RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) data 0a.00.2P4 0a 0 2 SA:B 0 SSD N/A 95312/195200512 95320/195216896
    • Unable to expand the storage pool capacity after adding new drives to the storage pool with RAID-4 configuration
      https://kb.netapp.com/on-prem/ontap/OHW/OHW-KBs/Unable_to_expand_the_storage_pool_capacity_after_adding_new_drives_to_the_storage_pool_with_RAID-4_configuration
      RAID 4 storage pool Added SSD drives to the storage pool New SSD drives added to an existing storage pool using RAID 4 The capacity of the storage pool does not increase The newly added drives show up...RAID 4 storage pool Added SSD drives to the storage pool New SSD drives added to an existing storage pool using RAID 4 The capacity of the storage pool does not increase The newly added drives show up in the spare pool. RAID 4 storage pool SP1 created with 11 drives ::*> storage pool show-disks Storage Pool Name: SP1 2.71.0 SSD 372.4GB 372.6GB The newly added 13 drives show up in the spare pool of both the nodes with partitions, instead of being added to the hybrid aggregates.
    • Unable to delete Storage Pool
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Unable_to_delete_Storage_Pool
      Applies to ONTAP 9 Storage Pool Issue Unable to delete Storage Pool, Storage Pool stays in deleting state
    • Storage Pool reports One or more disks belonging to the storage pool are not visible
      https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Storage_Pool_reports_One_or_more_disks_belonging_to_the_storage_pool_are_not_visible
      Applies to Storage Pool Shared Storage Pool reports degraded as below: Storage Pool Name ssp1 UUID of Storage Pool 30b2be16-38ea-11e8-ae1e-00a098d6b0a0 State of the Storage Pool degraded Nodes Sharing...Applies to Storage Pool Shared Storage Pool reports degraded as below: Storage Pool Name ssp1 UUID of Storage Pool 30b2be16-38ea-11e8-ae1e-00a098d6b0a0 State of the Storage Pool degraded Nodes Sharing the Storage Pool cluster01-1 Number of Disks in Storage Pool 10 Storage Type SSD Storage Pool Usable Size 9598790533120 Storage Pool Total Size 9598790533120 Is Pool Healthy? Reason for Storage Pool Being Unhealthy One or more disks belonging to the storage pool are not visible.