Linking two identical WD MyBook Live Duo Boxes

My question is if it is possible to link two identical MyBook Live Duo (4 TB) together. Each of them is running in the RAID 0 Mode and they should cover each other (like RAID 1).

*OR*

They should combinate there capacity (like RAID 0).

If you use the SafePoint feature you can set one to backup to the other. That would kinda be like a RAID 1. I don’t see any real advantages over having two drives running RAID 1 individually.

As far as a hardware connect between the two, there is none that I am aware of.