NonStop Server Guide for BEA WebLogic Server 8.1

Introduction
HP NonStop Server Guide for BEA WebLogic Server 8.1—529891-001
1-7
Differences Between SMP Systems and HP
NonStop Servers
Differences Between SMP Systems and HP
NonStop Servers
A WebLogic Server domain deployment on a traditional SMP system can be viewed as
presented below.
The Administrative Server, Managed Servers as part of a cluster, Managed Servers
independent of clusters, and Node Manager all run on a single SMP machine. The
threads of all these Java Virtual Machine (JVM) instances can be scheduled on all the
available processors (see Figure 1-4).
Fault tolerance is not built into these systems. Loss of a processor can bring down the
entire system along with all the instances running on the machine. Until the transaction
logs and other critical components are recovered on a configured backup system,
significant application outages can occur.
Figure 1-4. WebLogic Server Domain Representation on a 4-Way SMP Machine
VST001.vsd
Administrative
Server
Managed Server
(independent of
cluster)
Managed Server
(part of a cluster)
Node Manager
Managed Server
(part of a cluster)
Managed Server
(independent of
cluster)
Managed Server
(part of a cluster)
Managed Server
(part of a cluster)
4-way SMP Machine