The below error may occur when opening the Forest Recovery Console:
"Cannot open database "ForestRecovery-Persistence requested by the login. The login failed"
Grant the logged on account access to the SQL Database. The SQL Server is defined in the settings of the Recovery Manager console on the "Persistance" tab
The SQL database may not exist on the expected SQL Server. The SQL Server is defined in the settings of the Recovery Manager console on the "Persistance" tab. Since the persistance database is used for temporary storage, it is safe to reinstall this feature to a new SQL server. Go to programs and features and "Change" the existing installation of Recovery Manager for AD Forest Edition. Remove the Persistance feature and then reinstall it to the new SQL Server.