A financial services company is planning a multi-site QRadar V7.5 deployment. The primary data center will host the Console, an Event Processor, and a Flow Processor. A secondary disaster recovery (DR) site is required with a 4-hour Recovery Time Objective (RTO). The company wants to ensure that event and flow data collection is not interrupted at remote branch offices if the primary data center's WAN link fails. Each of the 10 branch offices generates approximately 1,500 EPS and 25,000 FPM. Which architectural component should be placed at each branch office to meet these requirements for resilient data collection?