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    • High latency in VM
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/High_latency_in_VM
      Applies to MetroCluster IP Issue High latency found for VM (virtual machines) whose data is stored in MetroCluster LUNs Multiple VM affected After node reboot, latency is in a good range but increases...Applies to MetroCluster IP Issue High latency found for VM (virtual machines) whose data is stored in MetroCluster LUNs Multiple VM affected After node reboot, latency is in a good range but increases again (can take weeks)
    • HA Group Notification from .. (Write Verification Error: Port 0m/0v Failed) EMERGENCY
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/HA_Group_Notification_from_Write_Verification_Error__Port_0m_0v_Failed_EMERGENCY
      Applies to MetroCluster IP NetApp validated IP switches Issue EMS log entries like: HBAFLD:HA Group Notification from [Node name] (Write Verification Error: Port 0m Failed) EMERGENCY HBAFLD:HA Group N...Applies to MetroCluster IP NetApp validated IP switches Issue EMS log entries like: HBAFLD:HA Group Notification from [Node name] (Write Verification Error: Port 0m Failed) EMERGENCY HBAFLD:HA Group Notification from [Node name] (Write Verification Error: Port 0v Failed) EMERGENCY
    • CRC errors on Broadcom switch
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/CRC_errors_on_Broadcom_switch
      CRC errors on node port: Total frames: 1217k | Frames/second: 1214 | Total bytes: 4821m Bytes/second: 4807k | Total errors: 72 | Errors/minute: 4 CRC errors: 72 | Runt frames: 0 | Fragment: 0 Bad UDP6...CRC errors on node port: Total frames: 1217k | Frames/second: 1214 | Total bytes: 4821m Bytes/second: 4807k | Total errors: 72 | Errors/minute: 4 CRC errors: 72 | Runt frames: 0 | Fragment: 0 Bad UDP6 cksum: 0 | Bad TCP cksum: 0 | Bad TCP6 cksum: 0 Mcast v6 solicit: 0 | Lagg errors: 0 | Lacp errors: 0 Total frames: 936k | Frames/second: 934 | Total bytes: 1578m HW UDP6 cksums: 0 | HW TCP cksums: 769k | HW TCP6 cksums: 0 RX errors in peer port (switch): 0/11 0/11-Lane1 N/A N/A N/A N/A N/A N/A N/A
    • Unable to delete Oracle clone after SC 4.8 upgrade
      https://kb.netapp.com/data-mgmt/SnapCenter/SC_KBs/Unable_to_delete_Oracle_clone_after_SC_4.8_upgrade
      Applies to SnapCenter Server (SC) 4.8 SnapCenter Plug-in for Oracle (SCO) 4.8 Microsoft Defender Antivirus Issue Unable to delete Oracle clones after upgrading to SnapCenter 4.8 The following error is...Applies to SnapCenter Server (SC) 4.8 SnapCenter Plug-in for Oracle (SCO) 4.8 Microsoft Defender Antivirus Issue Unable to delete Oracle clones after upgrading to SnapCenter 4.8 The following error is seen when trying to delete a clone: Failed to unmount the filesystem '<Clone_Name>', reason: umount: <Clone_Name>: target is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))
    • HA Group Notification (MULTIPLE DISKS MISSING) ERROR during ONTAP upgrade
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/HA_Group_Notification_MULTIPLE_DISKS_MISSING_ERROR_during_ONTAP_upgrade
      ONTAP 9 Rolling ONTAP upgrade Autosupport mail with subject HA Group Notification (MULTIPLE DISKS MISSING) ERROR sent after upgrade-initiated takeover Maybe: Autosupport mail with subject HA Group Not...ONTAP 9 Rolling ONTAP upgrade Autosupport mail with subject HA Group Notification (MULTIPLE DISKS MISSING) ERROR sent after upgrade-initiated takeover Maybe: Autosupport mail with subject HA Group Notification (SYNCMIRROR PLEX FAILED) ALERT Maybe: Autosupport mail with subject HA Group Notification (Health Monitor process schm: RaidDegradedMirrorAggrAlert[XYZ]) ALERT All missing disks are remote-disks (adapters 0m, 0v) Missing disks are discovered automatically after some seconds/minutes
    • RCF for NVidia switch not working
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/RCF_for_NVidia_switch_not_working
      Applies to MetroCluster IP Nvidia cluster switches RCF generator v1.7a Issue RCF file cannot be installed on switch
    • "DISK REDUNDANCY FAILED" due to transceiver issue
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/DISK_REDUNDANCY_FAILED_due_to_transceiver_issue
      Tue Sep 03 04:51:34 +0200 [ClusterA-02: doneq0: scsi.mcc.adt.ioTransportError:error]: mcc_adt[2] - Transport error during execution of command: HA status 0x13: CAM transport status 0x1b : cdb 0x28:356...Tue Sep 03 04:51:34 +0200 [ClusterA-02: doneq0: scsi.mcc.adt.ioTransportError:error]: mcc_adt[2] - Transport error during execution of command: HA status 0x13: CAM transport status 0x1b : cdb 0x28:356b6555:000d....Tue Sep 03 04:51:34 +0200 [ClusterA-02: scsi_cmdblk_strthr_admin: scsi.cmd.abortedByHost:error]: Disk device 0m.i1.2L17: Command aborted by host adapter: HA status 0x13: cdb 0x28:356b73b3:000d.
    • unable to switchover due to license issue
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/unable_to_switchover_due_to_license_issue
      [Job 1299] Job failed: Failed to validate the node and cluster components before the switchover operation. Errors: Failed to validate the node and cluster components before the switchover operation. n...[Job 1299] Job failed: Failed to validate the node and cluster components before the switchover operation. Errors: Failed to validate the node and cluster components before the switchover operation. netapp1 (non-overridable veto): The Vserver configuration state was set to "degraded" because configuration replication failed. Run the "metrocluster vserver show -configuration-state degraded -fields corrective-action" command to view detailed recovery information.
    • SyncMirror plex failure after replacing iWARP adapter
      https://kb.netapp.com/on-prem/ontap/mc/MC-KBs/SyncMirror_plex_failure_after_replacing_iWARP_adapter
      Plex: /Aggr1_data/plex1 (offline, failed, inactive, pool1) RAID Group /Aggr1_data/plex1/rg0 (partial, block checksums) Usable Physical Position Disk Pool Type RPM Size Size Status -------- -----------...Plex: /Aggr1_data/plex1 (offline, failed, inactive, pool1) RAID Group /Aggr1_data/plex1/rg0 (partial, block checksums) Usable Physical Position Disk Pool Type RPM Size Size Status -------- --------------------------- ---- ----- ------ -------- -------- ---------- shared FAILED - - - 1.68TB 0B (failed) shared 3.1.2 1 SSD - 1.68TB 3.49TB (normal) shared FAILED - - - 1.68TB 0B (failed) shared FAILED - - - 1.68TB 0B (failed) shared 3.1.6 1 SSD - 1.68TB 3.49TB (normal) ...