Do you have old floppy disks lying around that contain information you would hate to lose? They might contain genealogy data or old backup copies of income tax records or most anything else you cannot afford to lose.How long will the data last?
(Here's a hint: it won't last forever.)
Sydney Butler hass written an article that may answer some of your questions. You can read it in the How-To Geek web site at: https://tinyurl.com/3xckev5e.