Thanks for bringing this up. I sent our insurance company a spreadsheet of all my equipment, the model and serial numbers and the "replacement cost", so they would have it in their records. The strange thing with that was that our agent didn't think they'd cover my wiring (interconnects and speaker wires), she was stunned to see how much those cost.
My system has all digital sources. Over the years I've recorded all my purchased music (CDs and downloads) onto an external hard drive. That drive gets regularly backed up to two different cloud accounts (Google and Carbonite) and copied to an identical external hard drive, which lives in our fire safe. I can't imagine how long it would take to rebuild the library on that drive, hence my "over the top" backup strategy.
My system has all digital sources. Over the years I've recorded all my purchased music (CDs and downloads) onto an external hard drive. That drive gets regularly backed up to two different cloud accounts (Google and Carbonite) and copied to an identical external hard drive, which lives in our fire safe. I can't imagine how long it would take to rebuild the library on that drive, hence my "over the top" backup strategy.