I am buying Synology 212j NAS (http://www.amazon.com/Synology-DiskStation-Diskless-Network-Attached/dp/B005YW7OLM/ref=pd_cp_pc_0) but confused what Hard Drive to get. As there are some like WD Red/Green/Black. or go with another brand but i have heard great things about WD. And I am taking out Original Toshiba HD out of Macbook and replace it with SSD. So I was thinking of using that Toshiba in NAS as a Backup for Macbook through Time machine. But will I be able to install a 2.5" HD into NAS bays? Last question is more towards sharing/Networking. I usually can access my WDTV (USB2 HD Attached to it) from my Macbook but when I try to access Macbook from WDTV it asks me username and password and no matter what I provide it always fails to connect. Any help?