Data buffer configuration

The System Platform adapter used for replicating data to AVEVA PI Server is configured to buffer a maximum of 1024 MB (1 GB) of data to disk in store/forward mode. If you replicate large enough data volumes and/or experience long enough communication outages between the Historian and PI servers, you may need to increase this limit to avoid losing replication data.

To change the maximum data buffer size:

1. Locate the Store & Forward path for your configured replication server. You can find this by checking the properties of the replication server in the management console. For example, C:\Historian\StoreForward\PiRepl01.

2. Locate the System_Buffering.json file, which is in the SystemPlatformAdapter\Configuration sub-folder. For example, C:\Historian\StoreForward\PiRepl01\SystemPlatformAdapter\Configuration\System_Buffering.json.

3. Edit the System_Buffering.json file using the text editor of your choice. Change the value of the MaxBufferSizeMB setting to the maximum number of megabytes of storage to use for buffering data.

   Valid values are any integer from 1 to 2147483647. The default value is 1024.

4. Save your changes to System_Buffering.json, then restart the Historian to apply the changes.