Multiple Datacenter Deployment

Starting in release 8.5.1, GWS supports a deployment with multiple (two or more) datacenters. This section describes a this type of deployment.

Overview

A multiple datacenter deployment implies a logical partitioning of all GWS nodes into segregated groups that are using dedicated service resources, such as T-Server, StatServers, and so on.

The topology of a GWS Cluster can be considered as a standard directory tree where a leaf node is a GWS data center. The following diagram shows a GWS Cluster with 2 geographical regions (US and EU), and 3 GWS datacenters (East and West in the US region, and EU as its own datacenter).

For data handling and distribution between GWS datacenters, the following third-party applications are used:

• Cassandra—A NOSQL database cluster with multiple datacenters with data replication between each other.
• Elasticsearch—A search engine which provides fast and efficient solution for pattern searching across Cassandra data. Genesys recommends that each GWS datacenter have an independent, standalone Elasticsearch cluster.

Architecture

A typical GWS datacenter in a multiple datacenter deployment consists of the following components:

• 2 APINodes
• 2 StatNodes
• 3 Cassandra nodes
• 3 ElasticSearc nodes
• 1 SyncNode (only for Primary region)

The following disgram illustrates the architecture of this sample multiple datacenter deployment.