Im in need of about 4tb of storage (2 in reality, but if it grows I dont want to be messing with it for a while)

I need to share the NAS on 4 local computers but I would like to access the files remotely in case im not at the location. Does every NAS offer this?

We have a 3tb WD MyCloud thingy at work and it works fine for what im planning to use, but I dont know if there are better options out there.