You can back up both the active and the passive nodes in a Continuous Cluster Replica (CCR) environment in Exchange Server 2007. Before starting the backup operation, ensure that SnapManager is installed on both nodes of the CCR configuration.
Creating a secondary backup on a remote CCR node using the Backup wizard
You can create a copy of the database backup and verify it on another CCR node before the full database backup is created on the target node. This backup is called a secondary backup. You can use the Backup wizard to create secondary backup copies. This option is enabled by default in the wizard.