Nagios Support Forum

Hi there,
I'm having some issues with graphs, only on disk usage though.
I run 2 instances of XI in 2 datacenters, the first one is ~251 hosts, 600 service checks, the second one is a bit less.
I only had this problem with the first install; out of all the services (cpu, ping, memory, drive c, drive d, drive e) only the disk usage graphs are affected by this.
for drive c I have 2 service checks, at 10% every 6 hrs and at 5% every 4 hrs, the 5% disk check always shows graph while the 10% doesn't.
I never had this issue on the second instance of nagios, the hardware is identical.
the services are created by duplicating the first one, so they pretty much are identical.
last night I upgraded to 1.3 hoping this will fix the issue, no luck though.
any ideas?
thanks,
alex

problem solved! wow. apparently the 6 hours check is not good enough for graphs, changed to 30 minutes and it works nicely.

That makes sense, rrdtool is designed to handle larger batches of results at closer intervals, and then it produces graphs based on a certain time resolution. Thanks for the follow up!