I need to calculate the number of remote desktop sessions which are active across a pool of servers. However the number of the servers that are powered and running varies according to the time of day (i.e. all during peak times, some to few during off-peak).
I have a working Sensor Factory sensor totalling the source sensors successfully. However, as soon as even one single server is powered off, the results for the whole pool are returned as an empty value.
How can I get the Sensor Factory sensor to just assume a 0/nil value from a source sensor if the associated server is powered off?