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Disaster Recovery Explained: RTO, RPO, Backup, Replication, Failover and Multi-Region DR Modern infrastructure is built with an uncomfortable assumption: Eventually, something important will fail. A server can fail. A storage system can become corrupted. A database can lose data. A…
Server Clustering Explained: HA Clusters, Quorum, Failover, Fencing and Distributed Architecture A single server is easy to understand. It has its own CPU, memory, storage, operating system, network interfaces, applications, and processes. But it also creates an obvious architectural problem:…
High Availability Explained: Redundancy, Failover, Clustering, Multi-AZ and Multi-Region Architecture Modern infrastructure is not designed around the assumption that systems will never fail. Servers fail. Disks fail. Network links fail. Applications crash. Availability zones can experience outages. Databases can become…