I am looking to buy the ASUS WL-500G Premium. I am also looking to set up a NAS device using my new router. Instead of buying a NAS box, I want to buy a regular external enclosure (w/ SATA) and hook it up to the router. The tricky part of this is that I want to turn on the external HDD and forget about it. I need to have an enclosure with an auto shut-off feature. I think I found a couple good ones:

http://www.newegg.com/Product/Produc...82E16817198004
http://www.newegg.com/Product/Produc...82E16817106097

Now for the big question: If I hook up one of these boxes to the ASUS router, will it put the HDD on idle when its not in use? I certainly do not want the disk to be spinning 24/7.


Thank you for any help

-John