On Exchange 2013 and 2016, you can often see that the logging directory is growing, maybe too fast for your storage.
You can circumvent this, by implementing this script in task scheduler and running via Powershell:
gci ‘c:\Program Files\Microsoft\Exchange Server\V15\Logging’,’C:\inetpub\logs’ -Directory | gci -Include ‘*.log’,’*.blg’ -Recurse | ? LastWriteTime -lt (Get-Date).AddDays(-7) | Remove-Item
This one will delete all Exchange and IIS logs older than 7 days.