I tried all of the above and nothing worked. Then I stopped HDDTemp and that fixed it. I started all Grafana related containers again without the disks to wake from their slumber.
Same here. I can provided statistics upon request. It has been the same before where i tried 6.9 RC2. Then i reverted back to wait for the stable 6.9, but today the same issue, disks not spinning down.
thebrain-diagnostics-20210302-1615.zip