7705 SAR component redundancy is critical to reducing MTTR for the routing system. Component redundancy consists of the following features:
dual Control and Switching modules — for a highly available architecture, redundant Control and Switching Modules (CSMs) are essential
redundant power supply feed — a power feed can be removed without impact on traffic
redundant fan — if one fan fails, the others continue to operate and provide cooling to the system without impacting traffic
hot swap — components in a live system can be replaced or become active without taking the system down or affecting traffic flow to or from other modules