The 3-2-1 rule recommended three copies of data across two different media types, with one copy stored off-site. Originally proposed by Peter Krogh, this rule needs to be adapted to reflect current risk trends. In an ever-expanding and interconnected digital landscape, more advanced backup strategies are emerging to meet these needs. Veeam promotes the 3-2-1-1-0 rule, which fulfils the objective of ensuring data recovery through the diversification of storage copies. By incorporating these principles into their practices, organisations can guarantee the security and availability of their data in a dynamic digital environment.
Recommendations 3-2-1-1-0:
– 3 copies of the data
– Across two different media
– Including 1 off-site copy
– And a physical copy that is offline
– And no errors during the restoration tests
https://www.veeam.com/blog/321-backup-rule.html
Credit: Veeam