When I mentioned this I was thinking about doing the restore early so you would only have a small gap but still have the historical.ctretelea wrote: Yes I do backup but how to merge old one with new one?
Now that it is another week later this is getting more of a problem.
There are tools out there to merge RRD's but we do not include them in Nagios XI, so have not vetted then, I'm going to leave a link here if you would like to try
http://albertolarripa.com/2013/01/12/ho ... rrd-files/