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# Redundant License Managers - Overview

The method by which Sentinel RMS provides License Manager backup is by using redundant License Managers. All of the redundant License Managers at your site form a License Manager pool. Each of the License Managers in the pool can take over for any other if one of the License Managers goes down. If the primary License Manager (the old leader) comes up, it reclaims leadership and the control is transferred back to the primary License Manager.

Each License Manager runs on a separate computer on the network.

We recommend you to read through the following to understand redundant License Managers:

- Before You Set up Redundant License Managers..
- Setting up the Redundant License Manager Pool
- Redundant Pool Utilities
- Using Redundant Commuter Licensing