So here's my situation, I have an older array (pushing 7+ years at this point) that is now starting to fail. I've kept up everything up to date, swapped some hardware and was planning on upgrading everything this summer, but that plan is now shot. I have a dead hard drive, there's nothing critical on these drives by any means, but I'd like to migrate everything to a completely fresh system. My storage requirements aren't very high compared to some other users here, so my plan is to build a completely new/fresh system with 3x8TB drives, a 500GB SSD as a cache drive and then use something like rsync to get everything transfered. In my current failing system my UNRAID array is 6x3TB data drives and an SSD cache. If I build fresh using a trial license would I be able to transfer my license over relatively pain free after my data is transferred over? I would think it'd be pretty easy, I just want a quick sanity check. 

Sounds like a decent plan. As you probably know, the license file is correlated with the USB stick, so if you want to transfer your current license to a new stick you can copy the .key file to the config folder of the new stick and run the transfer wizard which will issue a new key file tied to the new stick and blacklist the old stick.

Thanks for the feedback. I found out about the transfer a couple of years ago when I was swapping out USB keys, I bought my license all the way back in 2010, probably the best technology investment I've made. I wish I could have done things on my own terms, but I'll have to make it work. Thanks!