The information that is still needed for a complete architectural design is how often backups are required for silver machines. This is not stated in the technical requirements, where only the recovery time objective and recovery point objective are given for the silver tier. The backup frequency affects the backup storage consumption, the backup window, and the restore point granularity. The other options are either already provided in the technical requirements (daily backup retention, amount of time required for a successful restore for gold machine) or not relevant for the architectural design (RMAN configuration guidelines). References: Veeam Certified Architect 2022 Exam Guide, page 10; Veeam Backup & Replication v11: Architecture and Design course, module 4.