Oh I know. I've got previous experience with Airwave and hotspots where Dan C helped me out quite a bit.
My HDR is 31 for client data retention and 31 for inactive and active client association and user data so not high. Everything else is 14 or lower.
My CPU I/O wait is fairly low. Avg 3.5%, idle is 93.2%.
I had never noticed the disk utilization almost maxing out during nightly maintenance so that's what got me worried.
We did end up upgrading the raid controller firmware which improved disk read/writes quite a bit but because we only have 8 monitoring ~1040 devices with an average of 8K to 12K clients a day, its doing what it can.
I have about 6735766 rrd files on the system and it has been up for more than 2 weeks or so.
RRD file size varies between ~416k to ~488k which amounts to about 390Gb of rrd files.
I'll be keeping an eye on disk space as well.
Thanks jeff for you input as always.