One thing I have noticed is, depending on what customers are using our network analysis tool for, they are often interested in retaining different volumes of collected network traffic information. This is usually a factor of whether they are interested in recent data or both recent and older data. In either case, having the right archiving configuration is crucial. In How is NetFlow data stored in scrutinizer? Part 1, we saw how data archiving worked in Scrutinizer. In part 2, I would like to focus on Scrutinizer historical data configuration.
Things to avoid:
- Running out of disk space.
- Losing some historical data you wished to keep, as a result of data roll ups.
- Not being able to view reports for certain time frames due to unavailability of data.
You need to:
- Be aware of the effects of each one of the height data history parameter settings.
- Use the NetFlow Calculator for an optimum estimation of how much disk space you need for your data retention configuration.
The accuracy and availability of useful data is a very important factor when using Scrutinizer for network bandwidth analysis. Understanding the data archiving system and configuring data retention correctly can ensure that the traffic information expected to be seen in Scrutinizer is indeed what the user sees when running NetFlow reports.
In addition, to make sure you are in good shape, I suggest taking a look at the NetFlow calculator right now to find out if you might run out of disk space in the future. All you need to do is, in the Scrutinizer web interface, go to Admin->Settings->Data History to see what configurations you have and plug those values into the calculator. Please feel free the call 207-324-8805 if you have any questions.