ULS and Multiple WFEs

Question

If a farm has multiple WFEs do they have the same ULS logging content replicated across both?

Or does each have its own set of logs?

Straight forward enough.

Answer 1

Each SharePoint Server only logs message due to code running on it in ULS. So you'll have different content on each.

You can use the PowerShell cmdlet Merge-SPLogFile to collect information from all servers