We are running the trial version of your software (We are planning to buy, just want to work out some bugs in our system first.) I'm trying to monitor some backup files with the file timestamp. I'm able to see the file, and it brings back the date last modified. I would like to setup an alarm that goes off if the file has not been modified after X number of days.

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I figured it out. The time is measured in seconds. With some simple math days*hours*min*sec I was able to get the number I was looking for.


Sep, 2010 - Permalink

Hello Corey,

do you use a Filesensor (from the description it sounds like you would). Then it should be no problem, and you would have two options:

  • Add a Threshold Trigger to the sensor, and enter an appropriate threshold value in seconds (you would have to calculate from the X number of days into seconds). This will cause a notification, but not change the status of the sensor (i.e. sensor will continue to be green).
  • Use an Error Limit. Please go to the "Channels"-Tab of the Sensor, select the Channel "Last Modified" and enable the Error/Warning-Limits. There please enter also a value in seconds. This will change the sensor state into red or yellow. You could use a State Trigger then upon this.

Best Regards.


Sep, 2010 - Permalink

i tryed this concept for a weekly image backup -File but the biggest amount of seconds is 99 999 and this is only a bit more then a day (= 86400). Is there a solution (newer version? or another way) Thanks


Jul, 2011 - Permalink

Rene, which version of PRTG are you using? It should be possible to enter more than 99,999s into the triggers Value-field even though not everything might be displayed.


Jul, 2011 - Permalink