# Calling all users with MASSIVE libraries
**URL:** https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802
**Category:** Plex Media Server
**Tags:** server-linux
**Created:** [February 11, 2022, 1:49am UTC](https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802 "2022-02-11T01:49:27Z")
**Posts on this page:** 5
**Page:** 2
### Author:  [@ChuckPa](https://forums.plex.tv/u/ChuckPa)
#### Post date: [February 11, 2022, 9:37pm UTC](https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802/22 "2022-02-11T21:37:01Z")
Do the math.
500 files x 20 chapters/file = 10,000 chapters
10,000 chapters @ 1 MB each = 10 GB for each block of 500 files.
This makes it clear none of the thumbnails are stored in any DB.
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### Author:  [@VBB](https://forums.plex.tv/u/VBB)
#### Post date: [February 11, 2022, 9:51pm UTC](https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802/23 "2022-02-11T21:51:55Z")
> [@ChuckPa](#):
>
> Thumbnails are stored in the filesystem
Thanks Chuck, but I think we already knew that much 😉 The question is whether having intro detection enabled could make the blob database that much larger (with just marker data). OP likely has 350k+ episodes.
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### Author:  [@ChuckPa](https://forums.plex.tv/u/ChuckPa)
#### Post date: [February 11, 2022, 10:37pm UTC](https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802/24 "2022-02-11T22:37:26Z")
I will find out where intro detection records are stored because, from what I see of the schema, it’s not in the blobs DB
LOGICALLY 😉
1. Media item (an ID number)
2. Offset in seconds (Integer)
3. Offset in bytes (Integer)
It would make sense, to me, to put the offsets in the same record as the media\_item itself.
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### Author:  [@ChuckPa](https://forums.plex.tv/u/ChuckPa)
#### Post date: [February 11, 2022, 10:40pm UTC](https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802/25 "2022-02-11T22:40:14Z")
Supplemental –
It’s in the `media_parts` table. I said “item” when it’s “parts” … close enough 😉
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### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [May 12, 2022, 10:40pm UTC](https://forums.plex.tv/t/calling-all-users-with-massive-libraries/775802/26 "2022-05-12T22:40:57Z")
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