Default virtual machine configuration
When you use predefined virtual system patterns, the virtual machines that are set for virtual system patterns have default settings.
A predefined virtual system pattern includes virtual machines with the virtual CPU and virtual machine memory that are shown in Table 1.
| Virtual machine | Default virtual CPU | Default virtual machine memory (GB) |
|---|---|---|
| Process Center or Process Server deployment manager | 1 | 3.0 Exception: For IBM® BPM stray node disaster recovery patterns,
deployment manager should have 4.0 GB memory by default.
|
| IBM HTTP Server (Process Center or Process Server) | 1 | 2.0 |
| Process Center custom node | 2 | 6.0 |
| Process Server custom node | 2 | 6.0 |
| Process Center database | 2 | 4.0 |
| Process Server database | 4 | 4.0 |
Note: If you increase the virtual machine memory for the custom
node, the JVM heap size of the IBM BPM application
server is tuned to be bigger. For example, the JVM heap size of the IBM BPM application
server is 2.5 GB if the virtual machine memory is 6 GB by default.
When the virtual machine memory increases to 12 GB, the JVM heap size
of the IBM BPM application
server is tuned to 5 GB automatically. Therefore, increase the added
disk size before the deployment to make sure the added disk size is
big enough for the possible dump files. You can simply count the size
of the dump files as the triple of JVM heap sizes.