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This is actually terrible advice. WORM media exists for a reason and telling someone with a mere 3-2-1 he will never loose data is absolutely irresponsible.
Neither is it a good idea to use regular hard-disk for offsite-cold storage. A really really bad idea.
If you follow proper 3-2-1 you are living the four nine’s dude. A “regular” spinning HDD can last a decade or more without fuss (define “regular” please…?)
You will not lose all 3 backups at once. When one goes down, you replace it. There’s a reason this is industry standard for media production and beyond. “Irresponsible”? Please.
3-2-1 is the minimal consensus and not recommended anymore for everything you need to reliably have access to after a long time - the fact that some ransomware viruses intentionally have a very time they are laying low to decrypt old and rarely used files is one of the main reasons. Healthcare, finance, taxation, accounting, etc. are all sectors that heavily rely on WORM media and long term tape storage.
You are right that a spinning disk often can work for 10 years - but there is a reason they are exchange earlier in a professional setting. Not all of them will. And you were talking about cold storage disks. This is something even the manufacturers do not recommend - for a reason.
Dude this isn’t healthcare this is a person’s home backups. Are you kidding me?
And yes you swap them earlier, I am just saying what is possible. Not that you should buy 1 drive, sit around 10 years, and expect everything to be fine.
You’re being very antagonistic here as well. I’m not sure what all the hostility is about. Either way I bet you if you follow 321 for your home backups you’ll never lose a single thing. Idk what you do at home and what you’re storing but for the vast majority of people that is more than enough.