RRD Issues

[charlesdf23]

I am having a weird issue with RRD's. For some reason I'm only maintaining about 5 months of graphs for viewing "past year". Here are my sample settings:

/usr/bin/rrdtool create \
/var/www/html/rra/406/29248.rrd \
--step 60 \
DS:traffic_in:COUNTER:600:0:1000000000 \
DS:traffic_out:COUNTER:600:0:1000000000 \
RRA:AVERAGE:0.5:5:600 \
RRA:AVERAGE:0.5:30:700 \
RRA:AVERAGE:0.5:120:775 \
RRA:AVERAGE:0.5:1:576000 \
RRA:AVERAGE:0.5115200 \
RRA:MAX:0.5:5:600 \
RRA:MAX:0.5:30:700 \
RRA:MAX:0.5:120:775 \
RRA:MAX:0.5:1:576000 \
RRA:MAX:0.5115200 \

[charlesdf23]

I'm almost certain that the issue is the file needs to be resized and it is dropping data as it goes. From the time I posted yesterday until today, another day has dropped off of the historical graph.

Is there some tricks or debug that I can run to troubleshoot this?

Thanks

[gandalf]

Please see http://docs.cacti.net/manual:087:8_rrdtool#rrdtool for some insight
R.