A security architect is designing the high-availability (HA) strategy for a critical Cortex XSIAM Engine deployment in a multi-site data center environment. The goal is to minimize data loss and ensure continuous operation even if an entire data center goes offline. Which of the following deployment models best addresses these requirements for the XSIAM Engine, and what are the key considerations for its implementation?
Correct Answer: C
For true high availability and disaster recovery across multiple sites, deploying multiple XSIAM Engine instances in an active-active configuration across geographically separate data centers is the most robust solution. This approach allows data sources to send logs to all active Engines (via mechanisms like round-robin DNS or a load balancer), ensuring that if one data center or Engine fails, others can continue to ingest data without interruption. Key considerations include network connectivity between sites, proper load balancing of log sources, and consistent configuration across all Engine instances. Option A offers minimal HA. Option B provides HA within a single site but fails for site-wide outages. Option D doesn't provide redundancy for data ingestion across sites. Option E is not the recommended or supported method for XSIAM Engine HA; XSIAM is designed for distributed ingestion.