Implementing an N+2-node Cluster for Optimal Redundancy

An N+2 cluster is the recommended cluster for achieving an optimal level of redundancy in your Unwired Platform architecture.

Prerequisites
Sybase recommends that you have Windows 2008 installed on all participating nodes in the cluster, irrespective of whether the node is a runtime server tier node or a data tier node. Windows 2003 is supported on non-cluster installations only.
Task

Once you have set up the environment and deployed components accordingly, perform end-to-end tests that validate the cluster before you make it publically available.

  1. Setting Up the Microsoft Cluster
    Set up the Microsoft cluster before you install the Unwired Platform data tier.
  2. Setting Up Data Tier Nodes
    Set up a data tier node using the Unwired Platform installer. The data tier node includes the consolidated database (CDB), the cluster database, the monitoring database, and the messaging database. An Afaria database is also installed if you install the Afaria server.
  3. Adding a Generic Service to the Data Cluster
    Before you can install your runtime server nodes, you must add a generic server resource for the data tier.
  4. Setting Up Runtime Server Tier Nodes
    Once you have confirmed that the generic service available, you can install and configure the runtime services tier.
  5. Installing Third-party Software
    If you are using third-party software with Sybase Unwired Platform, copy the third-party software components (DLLs, JARs, and libraries) to each server in a cluster.
  6. Validating the Cluster
    Once the runtime and data tiers are installed, ensure that these components have been set up correctly.
Parent topic: Clustered Environments
Related concepts
Unwired Server Clusters
Relay Server Setup