Existing jobs do not need to be updated that process the original/recovered VMs if you restore them to the same host and choose to preserve VM UUIDs. If you configure restore differently and want to process the recovered VMs, you must edit existing jobs or create new ones.
Configuring the client access namespaces ensures clients can connect to Exchange Server 2019 using the correct URLs for each service. They help to ensure a smooth user experience and avoid issues such as certificate errors and connection failures.
The Exchange Server 2019 Mailbox role server manages mailbox databases, which store user mailboxes and public folders. It also manages message transport and performs functions like filtering, antivirus and antispam protection, and content indexing.
Permanent failover is one method of completing failover. Permanent failover means permanently switching from the original VM to its replica.
The VM replica ceases to be a replica due to permanent failover and becomes the production VM.
For the Failback to the specified location, Veeam Backup & Replication must transfer the entire VM data, including its configuration and virtual disc content. Choose this option if you cannot use the original VM or restore it from a backup.