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Resiliency in ECH and ECE deployments

ECE Elastic Cloud Hosted

With Elastic Cloud Hosted (ECH) and Elastic Cloud Enterprise (ECE), your deployment can be spread across up to three separate availability zones, each hosted in an isolated infrastructure domain, such as separate data centers in the case of Elastic Cloud Hosted.

Note

While this document focuses on how ECH and ECE handle resilience, all the concepts and recommendations described in this section are also applicable to other deployment types. For example, in Elastic Cloud on Kubernetes, you can configure availability zone distribution and node scheduling through your Kubernetes platform.

Why this matters:

  • Data centers can have issues with availability. Internet outages, earthquakes, floods, or other events could affect the availability of a single data center. With a single availability zone, you have a single point of failure that can bring down your deployment.
  • Multiple availability zones help your deployment remain available. This includes your Elasticsearch cluster, provided that your cluster is sized so that it can sustain your workload on the remaining data centers and that your indices are configured to have at least one replica.
  • Multiple availability zones enable you to perform changes to resize your deployment with zero downtime.
Important

ECH and ECE orchestators automatically handle several aspects of cluster resilience that are discussed in the self-managed resiliency guidance for small and large clusters: