Install on NAS

[Reg]

Hi
I am running Minim very successfully. It is installed on an old laptop which acts as a server pointing Minim to my NAS and various External Hard Drives hanging off the laptop.
I am thinking of buying a new NAS, probably one of the two bay Synology ones and installing two 3TB hard drives in them.
Now the question (not before time I hear you say). If I do that, do I instal Minim on one of the hard drives or on the NAS two bay itself. If the latter, do I need to use PuTTy etc to get me there. I have looked at another thread here which shows how to do this but I ma not sure whether my computer skills stretch that far.
The alternaive for me is to replace one of my 1TB Externals with a 3 TB and hang that off the laptop.

Many thanks

Reg