The 3-2-1 rule recommended three copies of data on two different media, with one copy off-site. Initially proposed by Peter Krogh, this rule needs to adapt to today's evolving risks. In a digital landscape that is constantly growing and interacting, more advanced backup strategies are emerging to meet these needs. Veeam, for example, promotes the 3-2-1-1-0 rule, which meets the objective of ensuring data recovery by diversifying storage copies. By integrating these principles into their practices, companies can guarantee the security and availability of their data in a dynamic digital environment.
Recommendations 3-2-1-1-0:
- 3 copying data
- On 2 different media
- Including 1 off-site copy
- And a physically offline copy
- And no errors during restoration tests
https://www.veeam.com/blog/321-backup-rule.html
Credit : Veeam
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