Disk Hibernation - again

[LiamMJohnson]

I have both a Synolody DS918 and DS924 NASs with the latest DSM and the latest Jellyfin running on docker.
Both of the systems run from SSD, with Docker installed on SSD and the media on HDD. 
All logging and config are directed to directories mounted from the SSD.
Realtime scanning is off. 

None of this helps, and Jellyfin persists in keeping the disks from hibernating.
This issue has been mentioned a number of times, but not in the configuration where logging and configuration are directed to SSD. There should be nothing to keep the HDDs spinning. 

Apparently this used to work in previous versions.

Any suggestions?

[Efficient_Good_5784]

I believe this is a Synology issue. I have a DS920+ that I set to hibernate the HDDs. It has nothing running on it but the NAS wakes up the disks each hour. I have not been able to find the cause and don't think it's anything I installed because this is a fresh install with nothing set up by me.

I tried looking up online to see what I can turn off on the NAS, but nothing helps with this.
I would check to see if it's actually Jellyfin waking up the HDDs in your system. Try leaving Jellyfin off and see if the same behavior happens.

[LiamMJohnson]

Synology does have an issue, almost everything you run has some logging and wakes up the disks. However if you use an SSD for the main disk and move all the logging there, it will just keep the SSD "awake" and let all other drives hibernate until needed. It works perfectly with DS Video, but they are discontinuing support for that.

[toytown]

None of this helps, and Jellyfin persists in keeping the disks from hibernating.

I don't think this is a jellyfin issue.  I've have all my media HDDs sleep and only wake up when somebody actually clicks play on the specified media.  This has always worked and has been like this since i installed jellyfin several years ago.