3-2-1 strategy with HDDs only?

Hello,

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my total dataset is now 2TB and it grows about 1TB/year.

Is this a sound backup strategy:

buy 3 hdds today, rotate backups between them, so I have at least 2 previous versions of a file

replace them every X years, say every 3 years, so the chances of catastrophically losing all data are very very low

I have been looking at tapes also but the drives are quite expensive, and my dataset size probably does not justify them - or does it?

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