Why do many optical nodes accept two independent power supplies?

Many optical nodes accept two independent power supplies primarily to create redundant powering of the node. Redundancy is crucial in network infrastructure because it ensures continuous operation and reliability. If one power supply fails, the other can continue to provide power, thereby preventing outages that could disrupt service. This feature is particularly significant in telecommunications and broadband networks where uptime is critical for customer satisfaction and operational continuity.

While reducing equipment costs, improving data signal quality, and facilitating easier installations are important aspects of network design, they do not directly relate to the core reason for having dual power supplies in optical nodes. The primary focus on redundancy shows a commitment to maintaining consistent service and minimizing downtime in any failure scenario, which is essential in modern communication systems.