NDMP control or data connections use e0M resulting in poor NDMP backup performance
Applies to
- ONTAP 9
- NDMP
Answer
- NDMP control or data connections are using the e0M management port
- EMS will log messages similar to:
NDMP control connection is established on [IP address] which is hosted on port "e0M". This is a low bandwidth port and might impact performance.NDMP data connection is established on [IP address] which is hosted on port "e0M". This is a low bandwidth port and might impact performance.
- In most cases this results in poor NDMP backup performance
- In rare cases, using e0M for data operations (including NDMP) can result in an environment shutdown as described in Bug 1286273
- Common causes include
Additional Information
- NDMP backup performance Resolution Guide
- For more details on
preferred-interface-role, see SVM-scoped NDMP fails to establish data connection