Which topology configuration is recommended for optimizing server backups?

The recommended topology configuration for optimizing server backups involves co-locating the repository and TSM (Tivoli Storage Manager)/Administration Controller. This configuration is beneficial because it reduces the complexity of the architecture. By having both components in close proximity, data transfer between the repository and the TSM controller becomes more efficient, improving overall backup performance. This setup helps in minimizing latency since the operations can occur on the same node rather than across multiple nodes that might introduce delays.

Additionally, co-locating the repository and the TSM controller simplifies the management and maintenance tasks, as both components can be monitored and maintained together, potentially reducing the chances of network issues that could occur with a distributed setup. This arrangement also can lead to more efficient use of resources, as it allows for better optimization of hardware and storage capabilities.

Other options might involve either more complex or less efficient configurations. For instance, using a separate repository and TSM controllers could lead to increased communication overhead, making the backup process slower and more cumbersome. Relying on just one node can limit the system's redundancy and scalability, which are crucial for effective backup strategies. Increasing server capacity alone does not address the efficiency and performance improvements that arise from co-locating these specific components.