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6027-3734 [W] The server certificate for key server host (port port) is invalid and may have expired (validity period: validityPeriod).

Explanation

The server certificate used to communicate between IBM Storage Scale and the key server identified by host and port has expired.

User response

Refer to the Encryption chapter in the IBM Storage Scale documentation or key server documentation for guidance on how to create new server credentials and install them at the key server and in IBM Storage Scale.
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