Guest perspective from Rick Vanover of Veeam
The 3-2-1 rule is an excellent mindset for backup data management. The beauty of this rule is that it doesn't require any specific type of hardware, yet it can address nearly any kind of failure scenario. Some scenarios can include ransomware, hardware failure, loss of network/power/site, and accidental deletion.
Keep the 3-2-1 rule in play as a minimum viable configuration for how many copies of data Veeam can manage. The recommendation is to have at least one copy of data that is either offline or air-gapped for the highest resiliency levels.
When implementing the 3-2-1 rule with Veeam, there is flexibility everywhere. It doesn't necessarily mean more backup jobs or data transfers are needed. Backup copy jobs, replica jobs, storage snapshots, SOBR Copy Mode, and more can all be ways to achieve the 3-2-1 rule.