PI Interface for Bailey Infi90 49Chapter 12. Buffering Buffering refers to an interface node’s ability to temporarily store the data that interfaces collect and to forward these data to the appropriate PI Servers. OSIsoft strongly recommends that you enable buffering on your interface nodes. Otherwise, if the interface node stops communicating
with the PI Server, you lose the data that your interfaces collect. The PI SDK installation kit installs two buffering applications the PI Buffer Subsystem
(PIBufss) and the PI API Buffer Server (Bufserv). PIBufss and Bufserv are mutually exclusive that is,
on a particular computer, you can run only one of them at any given time. If you have PI Servers that are part of a PI collective, PIBufss supports
n-way buffering. N- way buffering refers to the ability of a buffering application to send the same data to each of the PI Servers in a PI collective. (Bufserv also supports n-way buffering, but OSIsoft recommends that you run PIBufss instead)
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