Why is high availability critical in collaboration design?

• A. To keep voice/video services running during node/link failures.
• B. To simplify configuration.
• C. To reduce licensing costs.
• D. To enable automatic firmware upgrades.

Answer: (A)

High availability is about keeping real-time voice and video services running even when parts of the system fail. In collaboration platforms, outages directly disrupt conversations, meetings, and presence, which are time‑sensitive and critical to business operations. Designing for high availability means building in redundancy and automatic failover across servers, media paths, and network links so that if a node or link goes down, calls can continue, conferences stay intact, and essential collaboration features remain accessible with minimal interruption. Survivability features like SRST provide local call processing during WAN outages, and redundant components and paths ensure continuity despite failures. This focus on uninterrupted service is why high availability is essential, whereas factors like simplifying configuration, reducing licensing costs, or automating firmware updates don’t address the core need to keep collaboration services available during faults.