800xA System loading
I have 2 Connectivity Servers/3 Aspect Servers/2 IM servers. I need to know how loaded is my 800xA system at the moment? Is there any limitation in trends configuration on IM servers and how to know the current loading status of IM servers. I just want to add log configuration aspect to already built few tags on 800xA system.
Have you read the System Guide's Capacity and Performance chapter?
- 5.1 - 3BSE041434-510
- 6.0 - 3BSE041434-600
Basic History can handle about 10.000 primary logs (add one or maybe two secondary log levels as well) and roughly 50 GB of storage data per Service Group.
Avoid large hierarchical structures with many levels per log in Basic History.
The amount of logs can easily be read from Basic History service provider statistcs (the "leaf" objects on the Basic History service in the Service Structure). DirectLogs = primary logs.
Each Log Template (normally in the Library Structure) has a function to count Log Configurations referencing the template.
An Information Manager server is mentioned to support 30.000 primary logs and 2 TB storage per IM server node. The log count can be queried from various places in IM (IM History Manager, IM History Log List, etc.)
You should also verify that your OPC DA servers can handle the additional load. Some OPC servers have special requirements for Update Rate and what properties that are subscribed.