"If you send your data away, & you have E<P troubles, how do you get your units back?"

I was thinking of long term data preservation but you always have the option of going to it or getting it sent to you either electronically or physically. Let us assume a single, massive EMP was able to take out your entire city... you may have to travel to a location unaffected to find a working terminal where you could download your data. That being said... for some data (not a 60 GB music library) it might be wise to pay for a bit of online storage.