Guys wanna ask is it sufficient if I get the DS112j or have to fork out around RM700+ to get a decent NAS?

My criteria is able to play atleast 720p over my TV and other devices, decent read/write.

I do not actually requite 2 bay because I have a local DAS of RAID 1 4TB.

I basically need a NAS so I can access my data whereever I go and also occasional stream of movies.