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    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/How_to_create_a_custom_NDMP_backup_role_for_Commvault_NDMP
      Applies to ONTAP9 NDMP intellisnap backup (formerly Commvault) Issue How to use a non-root user for NDMP backups with intellisnap The Filer contact is discovered when using an NDMP user with an Admin ...Applies to ONTAP9 NDMP intellisnap backup (formerly Commvault) Issue How to use a non-root user for NDMP backups with intellisnap The Filer contact is discovered when using an NDMP user with an Admin role.
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/Backup_failure_when_backing_up_one_SVM_with_a_full_backup
      dmp Fri Jan 21 19:36:36 GMT 2022 /<vserver>/<volume>/<directory> Log_msg (Write DIRNET for BKP ID=1592, type=3 interrupted while at waiting for max inflight. dmp Fri Jan 21 19:36:36 GMT 2022 /<vserver...dmp Fri Jan 21 19:36:36 GMT 2022 /<vserver>/<volume>/<directory> Log_msg (Write DIRNET for BKP ID=1592, type=3 interrupted while at waiting for max inflight. dmp Fri Jan 21 19:36:36 GMT 2022 /<vserver>/<volume>/<directory> Error (Write to socket failed) dmp Fri Jan 21 19:36:36 GMT 2022 /<vserver>/<volume>/<directory> Log_msg (Flush DIRNET called on error = -1.) dmp Fri Jan 21 19:36:36 GMT 2022 /<vserver>/<volume>/<directory> Error (DUMP IS ABORTED
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_backups_are_slow_for_Flexgroup
      Applies to ONTAP 9.7 Backup Application Issue NDMP backups for Flexgroup are very slow compared to Flexvol backups The NDMP backup/session can't reuse the NDMP backup context for Flexgroup The NDMP ba...Applies to ONTAP 9.7 Backup Application Issue NDMP backups for Flexgroup are very slow compared to Flexvol backups The NDMP backup/session can't reuse the NDMP backup context for Flexgroup The NDMP backup always starts from scratch for Flexgroup
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_backup_is_slow
      Tue Jul 27 18:00:53 SAST 202 /<vserver>/Abrasives/(3) Log_msg (Phase 3 throughput (MB sec): read 1 write 7 Tue Jul 27 18:00:53 SAST 202 /<vserver>/Abrasives/(3) Log_msg (Phase 4 throughput (MB sec): r...Tue Jul 27 18:00:53 SAST 202 /<vserver>/Abrasives/(3) Log_msg (Phase 3 throughput (MB sec): read 1 write 7 Tue Jul 27 18:00:53 SAST 202 /<vserver>/Abrasives/(3) Log_msg (Phase 4 throughput (MB sec): read 0 write 3 Tue Jul 27 18:02:40 SAST 202 /<vserver>/R_and_D/(4) Log_msg (Phase 3 throughput (MB sec): read 4 write 8 Tue Jul 27 18:02:40 SAST 202 /<vserver>/R_and_D/(4) Log_msg (Phase 4 throughput (MB sec): read 2 write 3
    • https://kb.netapp.com/on-prem/ontap/Ontap_OS/OS-KBs/Troubleshooting_Workflow_Volume_Move
      This flowchart helps you with solving issues related to moving volumes in ONTAP 9. The flowchart covers issues that may arise in any of the three stages of moving volumes - (a) before you move a volum...This flowchart helps you with solving issues related to moving volumes in ONTAP 9. The flowchart covers issues that may arise in any of the three stages of moving volumes - (a) before you move a volume, (b) during the process of moving a volume, and (c) after you have finished moving a volume. This covers almost all types of issues that you may face as you move a volume  in ONTAP 9.
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/Unable_to_run_NDMP_backup_on_flexgroup_volumes_via_Avamar
      Avamar NDMP backup for FlexGroup is failing with these errors: avtar FATAL <0000>: Backup 'MOD-1555374315747#1' to DDR not sealed due to previous errors [snapup-/svm1/fg_test] Backup for target /svm1/...Avamar NDMP backup for FlexGroup is failing with these errors: avtar FATAL <0000>: Backup 'MOD-1555374315747#1' to DDR not sealed due to previous errors [snapup-/svm1/fg_test] Backup for target /svm1/fg_test had errors. NDMP log shows the NDMP session has been completed: [12345] DEBUG: DMA<<S V4 sequence=33 (0x21) [12345] DEBUG: entry='DUMP: DUMP IS DONE\n' [12345] DEBUG: Time_Out::Timer 0x808b34d80 1655394623.675495 vs 1655394334.413775 (next 0x0) [12345] DEBUG: DMA>>S V4 sequence=17 (0x11)
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_backup_is_failing_to_create_a_data_connection
      The NDMP backup is failing with this NDMP error: [57398] DEBUG: BUF_Stream::input: fd=6 read -1 [EOF or error]: Connection reset by peer (ndmp_io_process) [57398] DEBUG: NDMP service_exit: called [573...The NDMP backup is failing with this NDMP error: [57398] DEBUG: BUF_Stream::input: fd=6 read -1 [EOF or error]: Connection reset by peer (ndmp_io_process) [57398] DEBUG: NDMP service_exit: called [57398] DEBUG: connection closed/aborted without CLOSE command from [10.14.10.6].66201 [57398] DEBUG: DATA sesion_close: data not present. [14576] [0x1E9E1ED0] CNDMPConnectionStart: Process Data Server connection..... [14576] NDMP SERVER INFO: Product: Network Appliance NDMP server FAS8200
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_backup_is_failing_Error_Code__39_424_unable_to_connect_to_the_tape_server
      Applies to ONTAP 9 CommVault NDMP Issue NDMP backup is failing Error Code: [39:424] Description: Client was unable to connect to the tape server on port [12002]. Please check network connectivity. Sou...Applies to ONTAP 9 CommVault NDMP Issue NDMP backup is failing Error Code: [39:424] Description: Client was unable to connect to the tape server on port [12002]. Please check network connectivity. Source: , Process: NasBackup Packet trace shows the node can't connect to the tape server on the configured port
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_Backups_Failing_on_a_Mixed-Version_Cluster_During_ONTAP_Upgrade
      NDMP backups are failing during an ONTAP upgrade when some nodes are running ONTAP 9.X, while others are still on ONTAP 9.Y. Sun Jun 15 2025 06:01:56 +02:00 [kern_ndmpd:info:7422] [12345] DEBUG: Time_...NDMP backups are failing during an ONTAP upgrade when some nodes are running ONTAP 9.X, while others are still on ONTAP 9.Y. Sun Jun 15 2025 06:01:56 +02:00 [kern_ndmpd:info:7422] [12345] DEBUG: Time_stamp=0x684e45b4 (Jun 15 06:01:56 2025) Sun Jun 15 2025 06:01:56 +02:00 [kern_ndmpd:info:7422] [12345] ERROR: DATA: Operation terminated: backup start request failure (1) on error: NDMPD does not support operation (for /SVM1/vol1/)
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_backup_fails_due_to_lack_of_space_on_volume
      84118:nsrndmp_save: Failed to propagate handle 0000000000000000 to E:\Legato\EMC NetWorker\nsr\bin\nsrndmp_2fh.exe child process: The handle is invalid. (Win32 error 0x6) 42923:nsrndmp_save: NDMP Serv...84118:nsrndmp_save: Failed to propagate handle 0000000000000000 to E:\Legato\EMC NetWorker\nsr\bin\nsrndmp_2fh.exe child process: The handle is invalid. (Win32 error 0x6) 42923:nsrndmp_save: NDMP Service Error: DUMP: Error: could not create snapshot "backup" snapshot : snapshot_for_backup.175 errval = 134 42923:nsrndmp_save: NDMP Service Error: DUMP: Error: Dump failed to initialize. 42923:nsrndmp_save: NDMP Service Error: DUMP: Error: DUMP IS ABORTED
    • https://kb.netapp.com/on-prem/ontap/DP/NDMP/NDMP-KBs/NDMP_full_backup_fails_for_one_volume
      Applies to NDMP ONTAP 9 Backup Application NDMPcopy Issue Full NDMP (level0) backup never completes for a large volume with many ACL's Long-running NDMP phase I Long-running NDMP phase III