The 3-2-1 backup rule is a revered and time-honored backup strategy which simply states that you should have 3 copies of your data (your production and 2 backup copies), on 2 different media (e.g. disk and tape), with 1 copy off-site for disaster recovery. Sounds reasonable – right. So why does it suck?
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Last Updated: 05/17/2016GO BACK