A business has the following new regulatory requirements to follow:3-2-1Prevent the most recent 31 days...

To meet the new regulatory requirements, enabling immutability on both the NAS and Amazon S3 is essential. Immutability prevents backup files from being deleted or modified, aligning with the requirement to protect the most recent 31 days of backup files. By enabling this feature on the NAS and Amazon S3, the business ensures that both local and offsite copies of their data are secure and compliant with the regulation. The other options do not directly address the new requirements of preventing deletion or modification of backup files.References:

Veeam Documentation: Immutability Settings

Veeam Help Center: Configuring Amazon S3 Immutability