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Copying Current State from a Redundant Storage Manager
To copy current state from a redundant storage manager (SM), you must shut down the redundant SM and make a copy of its archive and journal directories. This method allows you to create the database copy with no interruption in service to your database. However, shutting down a storage manager decreases the number of failures that the database can tolerate. Consequently, the recommendation is to provision enough resources so that you can shut down a storage manager without dropping below the database's fault tolerance.
To have a redundant storage manager that can be shut down without dropping below the database's fault tolerance, you should be running a multi-host database on at least three machines. This ensures that at least two storage managers continue to run while a third SM is temporarily shut down.
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