Dear MongoDB Developer Community,
The MongoDB team would like to announce that the migration tool mongomirror will reach its End of Life (EOL) on July 31st 2025, with mongosync taking its place. After the EOL date, MongoDB will no longer provide any updates, security patches, or support of any kind, and mongomirror will no longer be usable for migrations into Atlas. Mongosync provides significant enhancements in features, performance, and reliability compared to mongomirror. Please ensure all mongomirror-based migrations are complete before mongomirror’s EOL date, after which point only mongosync migrations will be supported.
Please note that after July, direct migration into Atlas with mongosync will only be supported for source cluster versions 5.0 and above. For other migration options, please refer to our self-managed tools.
Please note that mongosync does not presently support migrating to non-empty destination clusters, but this support will be added prior to mongomirror’s EOL.
Thank you and please feel free to reach out with questions.