I'm currently testing StableBit Scanner and I'm quite impressed and I'm most likely going to buy it in the next days.
However, there's one question I'd like to be resolved:
Even before I've been installing StableBit Scanner, I realized that my disks never spin down. I've got several disks in my server, most of them being accessed from clients only in very specific situations. So they SHOULD actually be dormant most of the time.
I use the Windows setting for spin down, currently set to 10 minutes to test the function. However, they never spin down.
I followed all the advice given in your posting above, "Throttle queries not more often than ... " is set to 60 minutes, "Do not query if the disk..." is checked. I don't use "Query Power mode directly from disk", though, because as I understand it, that shouldn't be necessary.
I turned on the "Performance" column and that shows me that there seems always to be a bit of traffic on the disks that should be idle. The performance varies between 600 B/s to 1.17 KB/s all the time. I suspect that there is some task accessing the disks continuously, therefor prohibiting them going to idle.
Is my assumption correct? Is there any way to figure out which process that could be? Do you know any "usual suspects", like one of the other Dashboard add-ins or software, that is installed on a server?