Home > Storage > PowerStore > Data Protection > Dell PowerStore: Metro Volume > Witness registration
Each PowerStore can register only a single witness service which is valid for all metro sessions on the PowerStore cluster. When metro sessions are already configured when metro witness is registered successful on participating PowerStore clusters, all existing metro sessions and new metro sessions are protected with the witness service. It’s not possible to enable or disable witness protection for individual metro sessions. The required registration token to register the witness service in PowerStore manager is generated with a SSH session to the metro witness server by using the script generate_token.sh as shown in the example below.
The generated token is valid for 10 minutes to register the witness service for one or multiple PowerStore clusters.
The following figure provides an example of registering the Witness. This is found in PowerStore Manager > Protection > Metro Witness > ADD
In the following screen the SSL certificate for the witness service with the certificate thumbprint is shown. For an optional validation of the shown certificate thumbprint in PowerStore manager can be compared with the thumbprint used by the witness service. The thumbprint can be shown in a SSH shell on the witness service server with
script thumbprint.sh as shown in the example below.