Coldline Storage is specifically designed for data that is accessed less than once a year, making it an ideal choice for disaster recovery backups where data retrieval is infrequent. It offers a low-cost solution due to its infrequent access pricing model, aligning well with the purpose of storing backups for rarely occurring disaster scenarios.
To centralize all projects under a single billing account, you should create a new billing account in the Google Cloud Platform Console and set up a payment method. This ensures that all the projects are linked to the new corporate billing account, allowing the company to handle payments centrally and efficiently.
To ensure that your application can reach the licensing server without changing its configuration, you need to assign the specific IP address 10.0.3.21 to the licensing server on Compute Engine. Reserving this IP address as a static internal IP address guarantees that the licensing server will always have this IP address and remain accessible to your application. This method ensures consistency and avoids any IP conflicts or changes over time, which is critical for the stability of your environment.
Automatic scaling with min_idle_instances set to 3 is the correct choice for ensuring that the number of instances scales based on request rate while maintaining at least 3 unoccupied instances at all times. Automatic scaling automatically adjusts the number of instances based on various metrics such as request rate, but by setting the min_idle_instances parameter, you guarantee that there will always be a specified minimum number of instances running, even when the request rate is low, thereby fulfilling the requirement of having at least 3 unoccupied instances at any time.
To duplicate IAM roles from one project to another with minimal steps, you should use the gcloud iam roles copy command and specify the production project as the destination project. This command directly copies the roles from the development project to the production project, ensuring the same roles and permissions are preserved.