BusinessObjects Enterprise architecture basic terminology

Host
A host can be a physical computer or virtual machine.


Server

A server is an Operating System (OS) level process hosting one or more services.
For example,
CMS and Adaptive Processing Server are servers.
A server runs under a specific OS account and has its own PID.


Service

A service is a server subsystem that provides a specific function. The service runs within the
memory space of its server under the Process ID (PID) of the parent container (server).
For example,
the Web Intelligence Scheduling and Publishing Service is a subsystem running within the Adaptive Job Server.


Node


A node is a collection of BusinessObjects Enterprise servers, all running on the same host.
One or more nodes can be on a single host. Each node is managed by a Server Intelligence Agent (SIA).


Server Intelligence Agent


The SIA is a locally run service managed by the operating system. The task of the Server
Intelligence Agent (SIA) is to start, stop, and monitor locally run BusinessObjects servers.

When one of the managed servers goes down unexpectedly, the SIA restarts the server immediately.
When you issue a command in the CMC to stop a server, the SIA stops the server.

When you create a SIA, you create a new node. A node is a collection of BusinessObjects
Enterprise servers which run on the same host and are managed by a single SIA.

You can add servers to the node and you can have more than one node on the same machine.

The SIA continuously monitors server status information, which is stored in the CMS databases.

When you change a server's settings or add a new server in the CMC, the CMS notifies the SIA
and the SIA performs the jobs accordingly.


................ continue..next we will discuss about Workflows for each servers and how the communicate each server