zone
Parameters
value
Indicates whether to enable zone awareness for the OpenSearch Service domain. When you enable zone awareness, OpenSearch Service allocates the nodes and replica index shards that belong to a cluster across two Availability Zones (AZs) in the same region to prevent data loss and minimize downtime in the event of node or data center failure. Don't enable zone awareness if your cluster has no replica index shards or is a single-node cluster. For more information, see Configuring a multi-AZ domain in Amazon OpenSearch Service .