Vertical cluster topology

A vertical cluster has more than one cluster instance within a node. A node typically represents a single physical server in a managed cell, but it is possible to have more than one node per physical server. It is very simple to add additional vertical clusters to a node, using the Deployment Manager administrative console, as each additional vertical cluster instance replicates the configuration of the first instance; no additional installation or configuration is necessary.

How many vertical instances that can be created in a single node depends on the availability of physical resources in the local system (CPU and memory). Too many vertical cluster instances could exhaust the physical resources of the server, at which point it is appropriate to build horizontal cluster instance to increase capacity if necessary.

The following diagram illustrates a vertical cluster. A single node has multiple instances of WebSphere Portal installed. The node is managed by the Deployment Manager. Each instance on the node authenticates with the same LDAP server and store data in the same database server. Although not depicted in the illustration, the database and LDAP servers could also be clustered if needed for failover, increased performance, and high availability.

Parent topic:

Server topologies

Related concepts

Single-server topology
Stand-alone server topology
Horizontal cluster topology
Combination of horizontal and vertical clusters
Multiple clusters
Single-server topology for Web Content Management
Dual-server configuration for Web Content Management
Staging-server topology for Web Content Management