Multi-node with Shared Hosts

This multi-node design supports Unwired Servers colocated with data tier servers, on hosts configured with a failover cluster service.

This multi-node design option is suitable for a production system that supports both load balancing for Unwired Servers, and failover of common data tier resources, with absolute minimum hardware requirements — just two host systems.

Multi-node enterprise system (shared hosts)

Both hosts are configured in a Windows-based failover cluster, with access to a shared cluster storage resource. Data tier and Unwired Server components are installed separately, on each host.

Data tier servers are configured during installation to use shared cluster storage for database files, then a managed cluster resource is defined for each data tier service in the failover cluster.
After cluster resources are defined for data tier services, Unwired Server components are installed on each host, as nodes in the Unwired Server cluster.

Data tier servers are managed by the failover cluster service, while colocated Unwired Servers are managed by the Unwired Server cluster. (The Unwired Server cluster is independent of the failover cluster).

In this design, all Unwired Servers and data tier servers must rely on network connections, because the failover cluster instance (managed data tier server) must be addressed as a distinct host, independent of any host machine in the failover cluster.

Host system resources must be adequate to support all of the applications and services included in all Unwired Platform server components.

Shared cluster storage resources must be adequate to support all databases managed by the data tier servers.