Hello,
We recently had an issue where a SNMP agent on a host machine froze. The Server was up and operated fine, however the space on the 
drive was filling up. While dialled in we noticed the space was down to 800MB - however the Orion Web Page showed 10GB free. When we went into the details of Drive we saw that there were no stats for the pst 9 days.
The SNMP agent had frozen on the host server - we re-started this and it worked just fine. However we almost completely missed that this server was running out of space. Obviously we lost all other stats during these 9 days as well - all bar the ping times.
I am wondering if anyone has been bale to set-up an alert that would tell us when a SNMP agent freezes or returns no data. By default Orion simply presents the last queried result, even though this may be 9 days old.
This is concerning me as we may have other servers that we are not collecting statistics from even thoguh Orion is presenting a value that looks to be relevant.
Has anyone seen this before and know how to work around this issue?
We are running Orion Network Performance Monitor SL250 verison 8.5.1 SP2
Jens
