Matthew Williams <matthew@ripe.net>               .               Techy Talk, December 20, 2001               .               http://www.ripe.net/ris/
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What is RRD?
•RRD – Round Robin Database
•Developed by Tobi Oetiker
•Tracks variable over time (min, max, avg, last)
•Fixed dBase size after creation because data ‘drops’ out of dBase (‘circle analogy’)
•Database definitions cannot be changed later and one cannot go back in time if data is missing
•Round Robin Archives also defined in the dBase relate to different time periods, e.g. daily, weekly, monthly, yearly
•Longer time periods will naturally have lesser resolution
•RRDTool is used to insert data into RRD and plot graphs
•http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/index.html
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