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.

[LiamMJohnson]

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.

Though when I stop the Jellyfin container the disks hibernate again shortly after. Some problem with the Docker version perhaps?

[bitmap]

Have you checked scheduled tasks? There are some that might spin up the HDDs such as library scans, downloading subtitles or lyrics, keyframe extractor, chapter image extraction, trickplay, subtitle extraction. You could set these to fire once a day or only when the container starts. You'll sacrifice the functionality of all these tasks, but maybe that's not important to you. No guarantee this works, either. Some plugins can change behavior as well and -- as already stated -- hardware/OS may have some blame as well. You would have to figure out how to track HDD activity by process over time rather than at a point in time.

[Maka]

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?

When I last owned Synology, 8 years ago, this was an issue in general on those units. its a NAS issue.

I switched to Asustor, populated the new unit with 2 X 4Tb 2.5" drives - yes the type used in laptops. These are near silent, use much less electricity & generate very little heat.

I disable hibernation & keep the disks spinning. 

On paper these drives have a bit lower performance but in my real world use I've had no complaints. After 5 years of continuous use they are still working just fine but it's probably time for me to look at replacing them as preventative measure. I have the NAS doing twice daily backups to a USB attached external drive.

Lateral thinking 😎

[LiamMJohnson]

Have you checked scheduled tasks? There are some that might spin up the HDDs such as library scans, downloading subtitles or lyrics, keyframe extractor, chapter image extraction, trickplay, subtitle extraction. You could set these to fire once a day or only when the container starts. You'll sacrifice the functionality of all these tasks, but maybe that's not important to you. No guarantee this works, either. Some plugins can change behavior as well and -- as already stated -- hardware/OS may have some blame as well. You would have to figure out how to track HDD activity by process over time rather than at a point in time.

Yes I have switched real time updates off and reduced the scans to daily. There is also nothing in the logs to suggest such an action is causing the problem