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Scanning and Refreshing a library do different things.Scanning and refreshing a library both have to do with getting content into the library. Scanning a library makes the Plex Media Server check its folders and sub-folders for new or removed media.

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If you start your Server at and have it set to update every 30 minutes, then an update will start around .

You can manually Scan or Refresh a library as a whole or Refresh particular items within a library.

A library Scan typically needs to happen every time you add or remove media files, and so it's useful to be automated.

A Refresh is something you'll want to do less often and so it's a manual action.

Periodic updates for your library allow you to have scans run at a set frequency.

This is controlled by two settings: Note: The periodic frequency is based on when the Plex Media Server starts up.

If it finds new or unmatched media, it then pulls it into the library and fetches metadata for it.

You can think of scanning as "check for new or changed content and get metadata for it if needed".

You should Scan Library Files if you have: Refreshing Metadata for a library or individual item causes the metadata for the item to be refreshed, even if it already has metadata.

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