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Revision as of 14:48, July 6, 2017
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.
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