No hibernation with Mac mini 24/7

[psmaaswinkel]

As a homeserver I have a mac mini running 24/7. Also the mac is used for xbmc.
Because xbmc needs acces to the NAS for movies and shows I have mounted a folder as drive within osx lion. Since I have mounted this drive the DS212j wont go to hibernation anymore.

Is there any sollution to get the DS212j go to hibernation again??

Regards,