Hard Disk Monitoring

Thank you for a detailed explanation! The real reason I'm digging into this is because HD Sentinel keeps reporting the power state of my hard drives as "Active". At first, I went looking for programs preventing them from spinning down, but now that I'm absolutely certain that these drives ...

Restarting HD Sentinel and rebooting my machine doesn't help. The rest of the settings work as expected. Am I missing an extra setting somewhere?