# Index Maintenance

This section describes some of the IDOL Server maintenance tasks that you can perform, using index actions.

- Back Up and Restore the Data Index. You can back up your index, and restore IDOL Server from a backup.

- Compact the Index. Compact the index to clear deleted documents and free space.

- Deduplicate Indexed Content. Remove duplicate documents in the index.

- Regenerate Data Indexes. Regenerate the field indexes of different types.

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