Stacey, this thread may be helpful in determining how license counts are calculated.
Good Morning Stacey,
Orion is licensed based on nodes, interfaces and volumes. An SL100 for example can monitor up to 100 nodes with 100 interfaces and 100 disk volumes. As soon as one of the element types is full, you will need to upgrade to add any new items of that element.
In your example, an SL250 license would be necessary since more than 100 interfaces were being monitored, even though you had node and volume license still open.
I hope that helps!
SolarWinds solutions are rooted in our deep connection to our user base in the THWACK® online community. More than 195,000 members are here to solve problems, share technology and best practices, and directly contribute to our product development process.