I was faced with this problem not long ago due to several planned house moves and the need to store my entire workshop as a result.
I put my Myford into storage about two and a half years ago and before doing so built a crate for it, stripped down the smaller parts, grease covered them and placed them in sealed bags. The main parts were liberally grease covered before the machine was bolted down in the crate and the lid fitted. The whole lot is still in store in a shipping container in a storage yard and when I checked it a few months ago was in perfect condition despite the situation and 'summer' weather.
Depending on how long you intend storing yours I would suggest the same method, but it's worth making periodic checks to make sure nothing is suffering and to take action if needed.
Robin