A Guide to Network Redundancy in Data Centers
Data center network redundancy ensures reliable connectivity by minimizing downtime risks with backup connections and equipment.
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Data center network redundancy means having multiple network connections and backup equipment so that workloads can stay connected to the outside world even if one connection fails. This matters because a data center's physical infrastructure is useless if its network goes down, making network downtime one of the greatest threats to data center reliability. Redundancy typically involves multiple internet service providers, physical cables entering at different locations, duplicate network switches and routers, and automated failover systems that redirect traffic when one connection fails. However, even with redundant networks in place, workloads often use only one connection at a time, meaning failover can take seconds to minutes, though bonded networking allows simultaneous use of multiple connections for instant switching if one fails.
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