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I am using hard drives in separate cases to backup data. How long this data will stay? How often should I (if should) re-copy stored data?

Suzan Cioc
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2 Answers2

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As long as the hard drives are not damaged physically, the data should theoretically last a long time (most likely it will outlive you). This question explains better: How much time until an unused hard drive loses its data?

However, you are encouraged to check your backups frequently and, if needed, recopy the data. I would consider a mixed strategy, backing up data on multiple formats, for long term storage.

Community
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Renan
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If this is a traditional (magnetic) drive, theoretically it will stay on the drive a long time. In practice, however, most drives are only guaranteed for 5 years or so. After that, you may want to look at archiving on DVDs or tape.

MDMoore313
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