Typical event rate · category

Windows servers log rate: 50 events/s per device

A Windows server source typically produces 50 events per second per device, bursting to 300: assumes 4688 plus Sysmon. The rate is an informed estimate, a starting point for a sizing, not a measurement; the event sizes below are measured.

Measured sources in this category

Average bytes per event, measured, and one device's volume at the typical 50 events per second.

At the median size, a day from one device, 4.6 GB, is about the size of a DVD.

Size a fleet

Raw bytes, before compression, indexing overhead and replication.

Measure a sample of your own

The figure above is an average; yours will differ, and for Windows server logs what moves it most is this: assumes 4688 plus Sysmon. The profiler reads a sample from Windows server logs in your browser, line by line, one event per line, and reports the bytes per line to set against it. Nothing is uploaded.