I recently enabled bitlocker on Windows 7 Ultimate workstation PCs on the peer to peer network. So their hard drives are protected when they are stolen. But there is Buffalo Linkstation on the network (doing RAID 1 on two 500GB HDs) with IP address of 192.168.1.xxx. I do a file backup on it from two workstation PCs, I copy everything from C drives to respective folders ( \\192.168.1.xxx\PC1, \\192.168.1.xxx\PC2). For example I use the command "XCOPY C:\*.* /S \\192.168.1.xxx\PC1" and "XCOPY C:\*.* /S \\192.168.1.xxx\PC2"
What are my options to protect that hard drive just like I can protect the hard drive(s) on the local workstation PCs in case of theft.