NAS-Issues
NAS-Issues
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Support for NetApp Console Backup and Recovery
Learn how MetroCluster works, why it’s important to back up your data, and how NetApp Console backup and recovery can help.
Learn how MetroCluster works, why it’s important to back up your data, and how NetApp Console backup and recovery can help.
Recommended component releases
List of recommended component releases per your ONTAP OS version.
List of recommended component releases per your ONTAP OS version.
Benefits of managing ATTO bridges in-band
Items to consider on the benefits of using ATTO bridges in-band.
Items to consider on the benefits of using ATTO bridges in-band.
How to use the RcfFileGenerator for MetroCluster IP
A detailed guide on how to use the RcfFileGenerator for MetroCluster IP.
A detailed guide on how to use the RcfFileGenerator for MetroCluster IP.
Useful commands for MetroCluster FC and IP switches
The most commonly used commands for configuring, managing and troubleshooting MetroCluster switches.
The most commonly used commands for configuring, managing and troubleshooting MetroCluster switches.
Upgrade switch RCF's without wiping the switch"
Documentation guide to upgrade an RCF file on a Cisco IP switch.
Documentation guide to upgrade an RCF file on a Cisco IP switch.
Other Resources
- CONTAP-615628: Aggregate Can Remain Unmounted During Volume RemountThu, 05 Nov 2026
- CONTAP-566111: Controller disruption during FlexGroup volume deletion with NFSv4 operationsWed, 04 Nov 2026
- CONTAP-802191: Adding a member in local-group returns duplicate entryWed, 04 Nov 2026
- CONTAP-751613: NFSv4.1 session trunking can cause a node panic during a LIF changeWed, 04 Nov 2026
- CONTAP-581165: High FlexCache Lock Counts Can Cause an Unplanned FailoverTue, 03 Nov 2026
- CONTAP-833830: CONTAP-833830 : Circular directory structure warning when running du or find on junctioned volumes via NFSv4Tue, 03 Nov 2026
- CONTAP-812927: S3 audit logs emit invalid JSON for domain\userThu, 29 Oct 2026
- CONTAP-825756: pNFS clients may stop receiving layouts after upgrade to ONTAP 9.18.1, causing all NFS I/O to be served through a single LIFThu, 29 Oct 2026
- CONTAP-732912: NFSv3 over RDMA Performance Degradation After Connection ResetsWed, 28 Oct 2026
- CONTAP-750352: Repeated Node Restarts with FPolicy Persistent StorageWed, 28 Oct 2026
- CONTAP-212066: High Latency During NFSv3 Access to Certain FilesWed, 28 Oct 2026
- CONTAP-809003: Auditing breaks silently for the SVM when a path name exceed 30k charactersWed, 28 Oct 2026
- CONTAP-714557: FlexCache Memory Consumption Can Cause System DisruptionTue, 27 Oct 2026
- CONTAP-735162: NFSv4 File Opens May Be Delayed During Planned Takeover, Giveback, or Aggregate RelocationTue, 27 Oct 2026
- CONTAP-738289: ANDU upgrade to ONTAP 9.19.1 or later aborts in post-apps phase for FlexCache origin volumes with writeback enabledTue, 27 Oct 2026
- CONTAP-737768: Node crash during batch consistency-group snapshot creation on SnapMirror Synchronous configurationsTue, 27 Oct 2026
- CONTAP-737786: SnapMirror relationship creation fails with SVM peering error when SVMs are in a custom IPspace and the cluster peer is in the Default IPspaceTue, 27 Oct 2026
- CONTAP-756639: Node Panic May Occur During High pNFS Activity and Concurrent Resiliency OperationsTue, 27 Oct 2026
- CONTAP-527915: Node Restart Caused by CPU Hang During File Lock UpdateTue, 27 Oct 2026
- CONTAP-788000: Incorrect FlexCache Constituent Count During System Manager ProvisioningMon, 26 Oct 2026
- CONTAP-645322: MetroCluster Vserver replication can fail during migration when LDAP schemas share a UUIDSat, 07 Nov 2026
- CONTAP-566111: Controller disruption during FlexGroup volume deletion with NFSv4 operationsSat, 07 Nov 2026
- CONTAP-581165: High FlexCache Lock Counts Can Cause an Unplanned FailoverSat, 07 Nov 2026
- CONTAP-732912: NFSv3 over RDMA Performance Degradation After Connection ResetsSat, 07 Nov 2026
- CONTAP-736113: Excessive Log Messages During NFS over RDMA LIF Bind RetriesSat, 07 Nov 2026
- CONTAP-648899: LDAP group membership lookup can take longer when memberUid is includedSat, 07 Nov 2026
- CONTAP-821088: LDAP connections to Active Directory fail with Invalid Credentials after Microsoft October 2026 domain controller updates when session-security-for-ad-ldap is "none"Sat, 07 Nov 2026
- CONTAP-726474: MetroCluster IP Switchover Can Fail When Vserver Configuration Is Not SynchronizedSat, 07 Nov 2026
- CONTAP-613639: FlexCache Files May Remain Undeletable After Delete-on-CloseSat, 07 Nov 2026
- CONTAP-690880: CIFS server creation with hybrid identities may fail with Microsoft Entra ID errorsSat, 07 Nov 2026
- CONTAP-663978: NFSv4 OPEN processing can trigger a controller failoverSat, 07 Nov 2026
- CONTAP-556259: Read and Write Latency May Increase When Global Distributed Data and SMB Multichannel Are EnabledSat, 07 Nov 2026
- CONTAP-595771: REST API Support for Configuring Preserve Unlink on VolumesSat, 07 Nov 2026
- CONTAP-481030: Stack Corruption During NFSv4.1 Session TrunkingSat, 07 Nov 2026
- CONTAP-796373: LDAP Group Lookups Fail When member-uid Is UnsetSat, 07 Nov 2026
- CONTAP-524651: High pNFS Device ID Memory Use Can Disrupt NodesSat, 07 Nov 2026
- CONTAP-732021: CIFS open-files API can return an invalid pagination linkSat, 07 Nov 2026
- CONTAP-727096: Unexpected Controller Reboots with "process on cpuXX hung (AssistThread)" in Large NFSv4.1/pNFS EnvironmentsSat, 07 Nov 2026
- CONTAP-720217: NFSoRDMA connections may fail after migrating a LIF between different RDMA network adapters on the same nodeSat, 07 Nov 2026
- CONTAP-683193: Long-running RPC operation (procedure number 21) for RPC server nitro_cfgSat, 07 Nov 2026
NAS Public Report
Highest rated
(rating)- CONTAP-821088: LDAP connections to Active Directory fail with Invalid Credentials after Microsoft October 2026 domain controller updates when session-security-for-ad-ldap is "none"
- CONTAP-120160: NFS v4.2-xattrs field getting flipped after upgrades
- NFSv4.2 clients report "invalid argument" after upgrading ONTAP from a version affected by CONTAP-120160
- CONTAP-318796: Occasionally the SID Lookup via LSAR_LOOKUP_SIDS2 is failing due to error:NT_STATUS_NETWORK_SESSION_EXPIRED(0xc000035c)
- CONTAP-572096: RFE: Support SMB3.1.1 protocol for DC connections
- CONTAP-250153: RFE to completely bypass name string resolution in NFSv4
- CONTAP-387859: SETINFO metadata modification errouneously evicts blocks with write-back
- CONTAP-561186: SVM-DR apply fails on FlexCache commitrefresh with “entry doesn’t exist” when origin is created post SVM-DR
- CONTAP-413023: Accessing an NFS mount fails due to authentication error
- CONTAP-347583: CIFS server creation using Windows 2025 Domain Controller failing with KRB5KRB_AP_ERR_MODIFIED error
- CONTAP-473457: CIFS/SMB multichannel read/write Performance degradation observed when using FlexGroups
- CONTAP-525578: Vscan Connection Interruptions with SMB3 Encryption
- CONTAP-541825: Enabling AES Kerberos Encryption for cifs fails with KDC has no support for encryption type to Windows 2025 Domain Controllers.
- CONTAP-442307: Large mbuffers exhaustion due to too many sockets from port 5455
- CONTAP-556436: ONTAP cluster node reboots unexpectedly
Recently updated
(date updated)- CONTAP-645322: MetroCluster Vserver replication can fail during migration when LDAP schemas share a UUID
- CONTAP-566111: Controller disruption during FlexGroup volume deletion with NFSv4 operations
- CONTAP-581165: High FlexCache Lock Counts Can Cause an Unplanned Failover
- CONTAP-732912: NFSv3 over RDMA Performance Degradation After Connection Resets
- CONTAP-736113: Excessive Log Messages During NFS over RDMA LIF Bind Retries
- CONTAP-648899: LDAP group membership lookup can take longer when memberUid is included
- CONTAP-821088: LDAP connections to Active Directory fail with Invalid Credentials after Microsoft October 2026 domain controller updates when session-security-for-ad-ldap is "none"
- CONTAP-726474: MetroCluster IP Switchover Can Fail When Vserver Configuration Is Not Synchronized
- CONTAP-613639: FlexCache Files May Remain Undeletable After Delete-on-Close
- CONTAP-690880: CIFS server creation with hybrid identities may fail with Microsoft Entra ID errors
- CONTAP-663978: NFSv4 OPEN processing can trigger a controller failover
- CONTAP-556259: Read and Write Latency May Increase When Global Distributed Data and SMB Multichannel Are Enabled
- CONTAP-595771: REST API Support for Configuring Preserve Unlink on Volumes
- CONTAP-481030: Stack Corruption During NFSv4.1 Session Trunking
- CONTAP-796373: LDAP Group Lookups Fail When member-uid Is Unset
Recently added
(date created)- CONTAP-615628: Aggregate Can Remain Unmounted During Volume Remount
- CONTAP-566111: Controller disruption during FlexGroup volume deletion with NFSv4 operations
- CONTAP-802191: Adding a member in local-group returns duplicate entry
- CONTAP-751613: NFSv4.1 session trunking can cause a node panic during a LIF change
- CONTAP-581165: High FlexCache Lock Counts Can Cause an Unplanned Failover
- CONTAP-833830: CONTAP-833830 : Circular directory structure warning when running du or find on junctioned volumes via NFSv4
- CONTAP-812927: S3 audit logs emit invalid JSON for domain\user
- CONTAP-825756: pNFS clients may stop receiving layouts after upgrade to ONTAP 9.18.1, causing all NFS I/O to be served through a single LIF
- CONTAP-732912: NFSv3 over RDMA Performance Degradation After Connection Resets
- CONTAP-750352: Repeated Node Restarts with FPolicy Persistent Storage
- CONTAP-212066: High Latency During NFSv3 Access to Certain Files
- CONTAP-809003: Auditing breaks silently for the SVM when a path name exceed 30k characters
- CONTAP-714557: FlexCache Memory Consumption Can Cause System Disruption
- CONTAP-735162: NFSv4 File Opens May Be Delayed During Planned Takeover, Giveback, or Aggregate Relocation
- CONTAP-738289: ANDU upgrade to ONTAP 9.19.1 or later aborts in post-apps phase for FlexCache origin volumes with writeback enabled