Just to provide an update as to where I am with this I shall post what I did to resolve my issues.
I replaced the netapp snmp and windows FileSystem templates; Augmented is more accurate. For windows I used WMI to get disk space and for Netapp I used ssh. I can walk anyone who cares through creating their own versions of these but to share the plugins themselves would probably requires an OK from my company's legal dept.
This is just one more step in removing snmp totally from my monitoring. Snmp or atleast how zenoss implements it is very fragile thing. Long ago I repaced the process monitoring with templates. To this end I would suggest that zenoss abandon the fancy built in monitoring, or replace all of it with templates so it can be more easily replaced/removed/fixed by end users. It's hard to test this stuff properly unless you are actually running the monitoring yourself and who has every version of snmp lib/netapp/sun/EMC/windows/switch version/brand around anyways? So to this end I would suggest a more modular system removing any built in monitoring/calls and adding hooks for templates for things like Status,more OS page parts like services or processes, hardware/software. The impressive parts of zenoss for me has been the great interface, object oriented device tree, and the multi graph reporting. Most of the built in monitoring bits have not worked so well.
Jesse
