OK so this is a reply to everyone who had an issue remounting your D-link device to a mac...
remember its a network server, and sometimes you need to call on that server.
So on you Mac desk top Menu, your going to click on GO
scroll down to were it says, Connect to Server. A window pops up. You enter the server address
to the left of the text field is an add( + ) button, click on it, to add the address to your Favorite Servers: table list. and then click connect. The 2 Volumes on the DNS-321 should pop up on your desktop.
For those of you, who shut down computers after each use, you might need to do this, every time you boot up.