hard drive - How to idle a rarely used HDD

On my desktop PC, beside the main HDD with the master-partition I also use a separate HDD which I actually access quite rarely, say once a week.

So I want to know if there's any application utility out there which can let me stop the HDD when I don't need it running and restart it when I need it. I want to reduce both the overall power consumption and the wear of the disk.

Thanks.