How to check that the HDDs are spinned down?

[mito]

Hi there,
how can I control, that the HDDs are really spinned down, if the NAS is not in use? The fan is much louder than the HDDs so I can't hear this.

[mdgm]

You'll need to download your logs (status > logs > download all logs), extract the zip contents and look in daemon.log. There will be entries in there regarding the disks "spinning" if the disks are spinning down and up.

[mito]

The HDDs and the sytem are able to spindown:

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Jan  4 21:27:18 ReadyNAS noflushd[1830]: Spinning down disks.
Jan  4 21:38:04 ReadyNAS noflushd[1830]: Disks spinning up after 10 minutes.
Jan  4 22:03:58 ReadyNAS noflushd[1830]: Spinning down disks.
Jan  4 22:55:09 ReadyNAS noflushd[1830]: Disks spinning up after 51 minutes.
Jan  4 23:25:40 ReadyNAS noflushd[1830]: Spinning down disks.
Jan  5 00:15:36 ReadyNAS noflushd[1830]: Disks spinning up after 49 minutes.
Jan  5 00:36:31 ReadyNAS noflushd[1830]: Spinning down disks.

But the last entry is from January 6. I think there is a process in the background which keeps them runnning
Which of all the log-files could help us to find out who the bad guy is?

[mito]

It's me again. I had all PCs an network stuff shutdown. The deamon log is:

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Jan 19 18:36:38 ReadyNAS ntfs-3g[21439]: Unmounting /dev/sdc1 (core)
Jan 22 18:06:27 ReadyNAS chronyd[2977]: Can't synchronise: no majority
Jan 22 18:10:44 ReadyNAS chronyd[2977]: Selected source 64.94.70.147

So no spin-down
What can I do??