To expand an existing logical enclosure based on a single HPE Synergy frame to include a second frame and ensure a highly available master setup, the following steps should be performed:

Modify an existing logical interconnect to include the second HPE Synergy frame:This step involves updating the logical interconnect configuration to encompass the new frame, ensuring network connectivity and consistency across both frames.

Move one of the master modules to the appropriate interconnect bay in the second frame:To achieve a highly available master setup, one of the master modules should be relocated to the second frame, providing redundancy and high availability for the management components.