Cassandra cluster migration story
This is a simple story how we migrated a live production cluster with all its data into a new cluster, all without downtime. Old cluster: 60 c4.4xlarge instances Cassandra 2.1.12, 256 vnodes per host Each instance had two 1500 GB GP2 EBS disks. This matches the c4.4xlarge EBS bandwidth quite well as max bandwidth for …