We recommend a regular restart of your TM1 Model to ensure the bast performance. Depending on the size of your model and your situation this could be monthly or weekly.
Restarts can be scheduled, however the safest way to restart is using the following steps:
1. Use the TM1 Server Explorer to save all data to disk. Since TM1 version 10 this happens automatically when the service is shutdown, however doing it manually if the safest option.
2. Open the Services window on the admin server. (This can be done by running the command SERVICES.MSC)
3. Stop the TM1 Server
4. Start the TM1 Server.
Please be aware that although the server shows a status of 'Started', it can take some time for TM1 to become available. The time this takes depends on the size of your model.
Take a look at your Task Manager and the tm1sd Application process will show CPU activity indicating that it is loading.