what are the differences between wired and wireless NAS? Which one is better?

Solution
cost effective? or cheapest?
wireless will always be slower than wired, wired simply has more throughput. wired on the other hand you have to pay for each connection. (Buying the wire and switches)
wireless would be cheaper as you would need no wires but then again you would be limited by the wireless transfer link, which a nas can saturate.
wired tends to be more reliable.

R_1

Expert
Ambassador
cost effective? or cheapest?
wireless will always be slower than wired, wired simply has more throughput. wired on the other hand you have to pay for each connection. (Buying the wire and switches)
wireless would be cheaper as you would need no wires but then again you would be limited by the wireless transfer link, which a nas can saturate.
wired tends to be more reliable.
 
Solution