I do something very similar, my oldest build gets synched once a year and is in cold storage. I hope I never need it. The hard drives from my previous build hol

I do something very similar, my oldest build gets synched once a year and is in cold storage. I hope I never need it. The hard drives from my previous build hold cold copies of the most valuable volumes (monthly sync), and the current system has plenty of redundancy and snapshots (insurance, not really backups). I use zerotier to stay in sync when away from home.