TM1 is RAM-based system which provides superior performance to disk-based systems by reducing physical disk I/O operations. Since TM1 is RAM-based, a back-up strategy must take this into consideration. In order to back-up all TM1 data that is currently residing in RAM, two approaches can be taken.
The first approach is to shut down the TM1 server and then to respond YES to the save changes confirmation. Once the TM1 server application is closed a backup can be run against that TM1 server's data directory.
The second approach is to leverage the Transaction Logging capabilities in TM1 to perform a live backup against the TM1 Server without the need to shut down the server. When users are working within the TM1 application, any data that is entered is held in RAM until a "Save Data" operation is executed, this will save any in-memory data to the disk files in the data directory. In this case, the administrator would execute a Save Data command and then proceed with a backup of the data directory.
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