Sleep USB harddisks on Idle

[inflatablemouse]

Me again with yet another question illy:

THe USB harddisks keep spinning when the system is turned off or enters S3 sleep. Ideally I'd like the HDD's to spin down on S3 or at least when I shut the system down.

Anyone have an idea on how to do that?

Thanks again!

PS. your search function on the site/forums doesn't work for me. It just sits there spinning like my USB harddrives indefinitely . I'm using Google to search the site which may not show everything.

[ultraman]

I think your USB ports stay powered that's why disks stays spinning.
What I did is to manually spin down them when entering suspend.

[inflatablemouse]

Yeh possibly but isnt it the OS that should do that when it goes to sleep?

Another thing I noticed is that the sleep function doesn't honor busy processes or a copy over the network, it just suspends. IMO, it should only go to suspend when its idle for the set time period.