I am using a 500gb WD scorpio blue notebook hdd attached to my e3000 through an sata-to-usb bridge. After accessing the disk (read a file) or even while downloading at slow speed on transmission, the disk spins down immediately causing the next access to be slow and causing a "clank" sound. With transmission, it continuously spins down and up when the download speed is slow. How could I prevent this ? Thank you.