Adding the library twice is bad for performance? yes or no?

adding the same path twice like this:

movies in drive c
movies in drive d
movies in drive e
etc.
and All Movies (c, d, e, f, g, h, i, j, k)

ChatGPT:
Adding the same path (or overlapping paths) twice in Plex—like having individual libraries for “Movies in Drive C,” “Movies in Drive D,” “Movies in Drive E,” and then another library for All Movies (C, D, E)—could indeed cause a few issues, though not necessarily in terms of performance:

1. Duplicate Scanning:

Plex will scan each library separately, meaning it will scan Drive C, Drive D, and Drive E multiple times. This can increase the time it takes for Plex to refresh your media, especially with large libraries. Each scan consumes CPU and disk resources.

2. Duplicate Entries:

Depending on how Plex handles the libraries, it could result in duplicate entries for the same movie (if a movie exists in multiple locations or is referenced in multiple libraries). This can make your media library look cluttered.

3. Potential Confusion:

Managing multiple libraries with overlapping content could become confusing. For example, some content may appear in multiple libraries, while others do not. This could make it harder to track or organize media effectively.

4. No Real Performance Boost:

Adding the same paths across multiple libraries doesn’t offer any performance benefits and may only lead to redundant work (i.e., scanning the same files more than once).

Recommendations:

Instead of duplicating paths, you could:

  • Add each path (C, D, E) separately in a single “Movies” library. Plex will aggregate them into one library view and scan all drives without duplication.
  • Use filters, collections, or smart playlists to organize content from each drive if you want to keep them logically separated.

This way, you avoid unnecessary duplication while keeping everything manageable and efficient.

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correct or incorrect?

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What are you trying to accomplish?

1 Like

I was wondering the same :wink:

But generally… the summary isn’t incorrect and makes sense.
If your media is spread across multiple drives – there’s no need (or benefit) of having 1 library for each drive – instead, add the library folders from the various drives to a single Movie library.

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