What must be done after upgrading the existing cluster during the Local to Metro upgrade process?

After upgrading the existing cluster during the Local to Metro upgrade process, backing up metadata is crucial. This procedure ensures that all critical configuration and operational parameters of the upgraded cluster are securely saved in case there are any issues post-upgrade or if a rollback is necessary. Metadata includes information about the cluster's settings, data configurations, and performance metrics, which are essential for maintaining the integrity and functionality of the upgraded system.

Conducting a backup enables administrators to preserve the state and configuration of the cluster before moving forward with additional steps or modifications. This precaution minimizes risks associated with the upgrade and provides a safety net for system recovery.

While other options like running I/O module upgrade scripts, cabling WAN COM connections, and configuring the new cluster are also important steps in the upgrade process, backing up metadata takes precedence as it serves as a safeguard for the entire cluster setup, ensuring data and configuration can be restored if needed.