Backup 'zstd: /*stdout*\: Input/output error'

In one of my server I frequently run into failed backups on a CIFS location and since this is the case for several month now I thought I start a new thread, also there already is this old thread from another user but probably with a similar problem.

What I can say for sure is that this is not a problem due to a limit of some sort on the backup destination. I tried various Storage Boxes with a lot of free TB and all had the same issue.

What I also can say for sure is I only see and...

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