[rrd-users] Re: Data archiving

Tobias Oetiker oetiker at ee.ethz.ch
Wed Aug 7 20:44:00 MEST 2002

Today Alex van den Bogaerdt wrote:

> Justin Shore wrote:
> > Howdy all.  I'm considering using RRD in the future for certain
> > statistics.  I'm curious about how long data is archived and how much
> > space it consumes.  What I'd like to be able to do is tell my CGI to
> > create a daily image from a particular day up to a year ago (maybe
> > longer).  Does RRD keep data that long or does it convert the daily
> > data into weekly and monthly data after a certain amount of time?  I
> > think I explained what I'm looking for correctly.  If it's confusing,
> > let me know and I'll try again.  Thanks
> RRDtool doesn't do this, *you* do this.  If you tell RRDtool to
> keep 10 years worth of data in a one-day resolution, it probably
> will do so.  There will be a limit but I don't think it will be
> reached that soon.

the limit is maxint, so as long as long is a 32 bit number on your
system, mrtg can not keep more than about 60 years worth of data at
1 second resolution ...


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