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Independent Disks (RAID) adapters with writeback caches and disk arrays with many
physical drives.
Network
Ensure that the network is fast enough not to create a system bottleneck. For example, a
dedicated 1 or 10 Gigabit Ethernet network is a good choice. Also, minimize latency
across the topology (for example, between Process Designer and Process Center,
between Process Center and the Process Center database, between Process Portal and
Process Server, and between Process Server and the Process Server databases).
Techniques to minimize network latency include physical co-location of hardware, and
minimizing firewall separation between Business Process Manager components.
Virtualization
When using virtualization such as IBM AIX® dynamic logical partitioning or VMware
virtual machines, ensure sufficient physical processor, memory, and I/O resources are
allocated to each virtual machine or logical partition (LPAR). Avoid over-committing
resources.
2.3.2 Deploy local modules in the same server
If you plan to deploy modules on the same physical server, you can achieve better
performance by deploying the modules to the same application server JVM. The server can
then take advantage of this locality.
2.3.3 Best practices for clustering
See IBM Redbooks publication IBM Business Process Manager V7.5 Production Topologies,
SG24-7976, for information about best practices for clustering. This book provides
comprehensive guidance on selecting appropriate topologies for both scalability and high
availability. Although the document was written for Business Process Manager V7.5, most of
the guidance still applies for Business Process Manager 8.0. You can retrieve this document
from the following location:
http://www.redbooks.ibm.com/redbooks/pdfs/sg247976.pdf
It is not the intent of this section to repeat content from that book. Rather, this paper distills
some of the key considerations when scaling up a topology for maximum performance.
Use the remote messaging and remote support deployment pattern
Use the remote messaging and remote support deployment environment pattern for
maximum flexibility in scaling. For more information, see the section “Topologies and
Deployment environment patterns” in the IBM Business Process Manager Advanced
Installation Guide at the following location:
ftp://ftp.software.ibm.com/software/integration/business-process-manager/library/i
muc_ebpm_dist_pdf.pdf
This topology (formerly known as the “Gold Topology”) prescribes the use of separate
clusters for applications and messaging engines. The topology also prescribes how clusters
are used for support applications servers (such as the Common Event Infrastructure (CEI)
server or the Business Rules Manager). This topology allows independent control of
resources to support the load on each of these elements of the infrastructure.
14 IBM Business Process Manager V8.0 Performance Tuning and Best Practices