This is a good starting point for creating a basic volume alert.
Are you asking how to limit the targetd of the alert to specific nodes, or how to pass the node name into the data of the triggered alert message?
For limiting targets, you'll want to look at the "scope" of the alert. For the message, there are a ton of options available as alert variables that you can build off of.
Thanks for your reply,
But the problem I have is that I have three servers and I want to monitor Unit C: but the label of this unit in the three servers is the same as I do to be able to put an alert to each one and to differentiate which Disk since server belongs .
Server 1: C: label 123456a
Server 2: C: label 12345a
Server 3: C: label 12345a
And I want you to alert me when they have 3% capacity available.