A failover plan in Veeam Backup & Replication allows you to define the order in which VMs are started during a failover operation. It can include startup delays for certain VMs, ensuring that some VMs can be configured to start after a defined time delay. This meets the requirement of having some replicated VMs start on a time delay.References:
* Veeam Backup & Replication User Guide: Failover Plans
* Veeam Help Center: Creating Failover Plans

The 3-2-1 backup strategy is a best practice that suggests having three total copies of your data, two of which are local but on different devices or media, and one copy offsite. In the described scenario, although there is an offsite component (SOBR with AWS S3 Performance Tier), and a local hardened immutable repository, there is no indication of a second local copy on a different device or media. This means that there is only one local copy of the backup data and one offsite copy. Therefore, the setup does not meet the 3-2-1 best practices requirement, which would involve having at least one more local copy on different media or device.

In Veeam Backup & Replication, to meet the business requirements of having both the database backup and transaction logs stored at a secondary location, a Backup Copy Job can be configured. The Backup Copy Job can be set to include both the VM backup and the transaction logs, ensuring that the database's recovery points are consistent and available at the DR site. The transaction logs backup every 30 minutes can be specified as the source for the Backup Copy Job, ensuring that the transaction log backups are also copied to the secondary repository.