Lotus Notes Migrations Best Practices


During Lotus Notes migrations, some data is processed and temporarily stored at the Source. Items are discovered in separate pages of 1,000 items. During processing:

  • Each page is processed in batches of 50 items or 5MB, whichever is less
  • Each item processed is temporarily stored in a temporary hidden folder in the mailbox
  • The entire temporary hidden folder is cleaned when one of the following occurs:
    • Each time GetPageOfItems is called (summaries, 1000 items/page)​
    • When it is done with GetFullItems on a batch (only the items in the batch)

The following should be considered when planning migrations because of the constant read, write, and delete actions during item processing: 

  • There will be consistently high disk input/output
  • Fluctuating free disk space
  • Verbose logging can cause excessive resource use as each action is logged
  • Without circular logging enabled, log files might use up free disk space quite rapidly​


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