Explanation: Once data is stored in the cloud tier, changing its encryption status is not possible due to data integrity and compliance constraints. Ensuring encryption settings are configured correctly before data migration is essential to secure storage in cloud environments. When data is moved to the cloud tier in a PowerProtect DD environment, the encryption status is locked in for that data. This means that once data has been stored in the cloud with encryption either enabled or disabled, this setting cannot be altered retroactively for that data. Cloud tier encryption provides secure data storage in the cloud, but any modification to encryption preferences would only apply to new data moved to the cloud after the change. This constraint ensures data consistency and integrity within the cloud storage environment.