Log file names of IIS web server

Log file names use the first several letters to represent the logging format, and the remaining numbers to represent the time frame or sequence of the log. See the table below for details. The italicized letters represent digits: nn for sequential digits, yy for the year, mm for the month, ww for the week of the month, dd for the day, hh for the hour in 24-hour format (that is, 17 is 5:00 P.M.).

Format	Criterion for New Logs	Filename pattern
Microsoft IIS Log Format	By file size	inetsvnn.log
	Hourly	inyymmddhh.log
	Daily	inyymmdd.log
	Weekly	inyymmww.log
	Monthly	inyymm.log
NCSA Common Log File Format	By file size	ncsann.log
	Hourly	ncyymmddhh.log
	Daily	ncyymmdd.log
	Weekly	ncyymmww.log
	Monthly	ncyymm.log
W3C Extended Log File Format	By file size	extendnn.log
	Hourly	exyymmddhh.log
	Daily	exyymmdd.log
	Weekly	exyymmww.log
	Monthly	exyymm.log

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