Customers report that migration throughput decreases significantly when migrating larger NSF databases (size threshold varies).
Performance issues are observed when end-users simultaneously access the affected databases.
Other databases on the same Domino server remain unaffected.
Logs do not explicitly indicate an error but show reduced migration speed.
MNE is designed to access NSF files efficiently only when they are available on a Windows-based file system or through a mechanism optimized for direct access.
On non-Windows platforms such as iSeries (AS400), direct access to NSF files is not supported.
If NSF files are accessed over slower mechanisms (e.g., network copies from iSeries), MNE performance and throughput are negatively affected.
This limitation is documented in the MNE_4.17_PreMigrPlanningGuide.pdf.
To ensure optimal throughput and avoid performance degradation:
Copy or replicate source NSF files from iSeries to a Windows-based file system prior to running migrations.
Alternatively, connect a disk directly to the MNE server containing the NSF copies for efficient local access.
Avoid using network-based access mechanisms from iSeries, as these significantly reduce migration performance.
Review current data access methods in your environment and adjust to ensure NSF data is being migrated from a Windows-accessible location.
