I had read that it was OK to store your vacuum packed, smoked hard cheese for years. So I did. But I ended up throwing a lot away that was over two years old. Some that I tried had turned nasty, so I pitched the lot. I think I'll set one year as about my max now.
If I had done the wax coating routine, with the inner layer done very hot so as to kill off anything on the surfaces of the cheese, it may have been a different story. But vacuum packed, and stored in my fridge, I found that it can, indeed, go bad. I didn't get sick, but that which I tasted had done something nasty.
It wasn't visibly moldy, but my taste buds gave me the red-alert!
Some of it may have been OK, but I didn't want to risk it. However, that opened up a lot of room in my cheese drawer for some new batches!