Learn about Topology 4 use cases

Topology 4 is for small to medium-sized PI Systems that requires high availability, and reside in a plant or on a single-site LAN-connected environment with an average use of event frames.

There are four versions of Topology 4 covered in this section. The one you select is dependent on the number of events that your PI System is expected to handle:

• Topology 4A is recommended for systems that have up to 1,000 events per second.

• Topology 4B is recommended for systems that have between 1,000 and 5,000 events per second.

• Topology 4C is recommended for systems that have between 5,000 and 20,000 events per second.

• Topology 4D is recommended for systems that have between 20,000 and 50,000 events per second.

Topology 4 installations require a minimum of five servers for high availability environments. The expectation is that there will also be one or more PI Vision servers implemented using a network load balancer.

Important points

Keep the following points in mind when building customer solutions based on Topology 4A, 4B, 4C or 4D:

1. The hard drive sizes shown in the diagrams are what the virtual machines in the test lab used; the actual hard drive sizing may vary, especially for the Data Archive servers and shared, external storage devices used for proxy drives and other hardware. 

2. Assume that PI product versions the same as or newer than those used in testing provide the same level of performance. If a given PI product version changes performance, topology information will be updated.

View Topology 4 diagrams:

• Topology 4A diagram

• Topology 4B diagram

• Topology 4C diagram

• Topology 4D diagram