Thank you, I apologize, I didn't mean to rant, I was incredibly frustrated with the lack of simple yes no questions which result is yes or no to ECC ram, eg is your data critical, is stability an important factor etc. Don't get me wrong, I still have a lot of reading to do but certainly from a number of YouTube videos, forum posts etc. there is no hard answer (exactly what you said) which I find really surprising because I don't consider computers an art form, but a science, so surely there's a logic diagram which helps you reach this decision. Anyway....
OK, so with regards to backups, if you're backing up a file which suffered bit rot, your backup would be compromised too over a period of time. You wouldn't know you were suffering bit rot until you accessed the file. The question then becomes how do you identify the early onset of bit rot on a file and restore it from healthy backup?
Lastly by my definition, the data is not critical, however I'm sure my partner would disagree as it contains a whole bunch of home pictures and videos. Based on that i need to take the appropriate actions to ensure the data is protected. With this in mind, I can take a local backup to a local NAS (my old one pre UNRAID), but I was also looking at using CrashPlan via docker as an offsite backup, but I'm still concerned about the horror stories I've read relating to bit rot. Your thoughts and guidance would be appreciated.