Why makes 2-way satellite internet services so reliable ?
Satellite communication is known for its reliability advantages over terrestial connections. The main reason for this high reliability is because the networks are largely independent of terrestrial infrastructure.
Terrestrial infrastructure facilities are extremely vulnerable to natural disasters.
To consider the difference, a water main break, fire, ice storm, bridge or tunnel incident, accidents, earthquake or a downed telephone pole cannot possibly disrupt satellite communications. As a satellite network consists of only a satellite, teleport, NOC and VSAT terminal, the number of opportunity for network outages are significantly reduced.
Compared to terrestrial networks, there are much less opportunities for a network outage. With terrestrial services (cable or DSL), network outages can occur at any point along the infrastructure. A complete satellite network can work independently of terrestrial infrastructure and maintain connectivity as long as the equipment can be powered.
Because it is difficult to make repairs in outer space, the satellite spacecrafts are designed with multiple layers of redundancy and multiple backup systems, resulting in uptime approaching 100%. There are even spare satellites already in orbit which are immediately available in the unlikely case of a catastrophic failure of a satellite.
Satellite operators, operate their networks to the absolute highest level of redundancy and reliability. These levels equal or exceed even military specifications in the manufacturing, launching and operation of their satellite spacecraft.
Satellite Internet Data services do reach availibilities of 99,99 %, which is equal to only one hour outage in a year.
Terrestric networks only do reach availibilities of 99,95 % maximum, which is equal to 5 hours downtime in a year.