Reducing the recovery point objective (RPO) for silver tier workloads means that the backup frequency will increase, resulting in more backup data being generated and transferred. This will affect the sizing requirements of the Veeam components that are responsible for storing and processing the backup data, namely the Veeam repository and proxy roles1.

The Veeam repository is a storage location where the backup files are stored. The repository size depends on the amount of data to be backed up, the backup method, the retention policy, and the compression and deduplication settings2. Reducing the RPO will increase the amount of data to be backed up, and may require more frequent synthetic full backups or active full backups to maintain the retention policy. This will increase the repository size and the disk space consumption.

The Veeam proxy is a data mover that performs backup, replication, and restore tasks. The proxy size depends on the number of concurrent tasks, the transport mode, the backup method, and the compression and deduplication settings3. Reducing the RPO will increase the number of concurrent tasks and the amount of data to be processed by the proxy. This will increase the proxy size and the CPU and memory consumption.

You can find more information about the sizing requirements and best practices for the Veeam repository and proxy roles in the following resources:

Veeam Backup & Replication Best Practices

Veeam Backup Repository Sizing Calculator

Veeam Proxy Sizing Calculator