We have a mix of HP Unix, A few flavors of Linux, And AIX. Along with a few other versions I'm not fully aware of.
1. HP UX was a headache to configure. But my unix admin was about to modify the snmp config file and now hp ux monitors correctly.
2. Some linux servers are not monitoring correct, and others are but display incorrect memory or cpu or hard drive space.
3. AIX. This is the trouble maker. All servers communicate via snmp just fine. But SolarWinds is pulling all the wrong values. My admins tell me that there are several values for memory for example. And the one that is important is not the one monitored. We had to create perl scripts make some odd modifications in SAM just to get the templates to show correct.
It would be best if NPM natively monitored the correct values of AIX so we don't need to rely on SAM or scripting to get the information we need. I'm not sure of the exact OID that corresponds to the values but figured if I opened a feature requests, if there are any Unix admins out there they could help fill in any gaps that I might not have the answer too off hand.