| CM | The Cluster Manager watches over all the activity for all of the processors. All transactions register and de-register with this component. If a failure occurs in one instance, the Cluster Manager redirects traffic until it is fixed. |
| Startup | The Startup component is part of the Windows NT operating system, but is not needed on other operating systems. It controls the sequence of events when the OPS starts up. |
| IO | The Input/Output component coordinates simultaneous access to shared disks. It works with the Oracle process called the Integrated Distributed Lock Manager (IDLM). |
| IPC | The interprocessor communication (IPC) component is responsible for moving information between the interconnected parallel processors as quickly as possible. A fast IPC is needed for good response time in the OPS. |
