Aside from our basic monitoring I have a team that wants to be notified only if a specific server runs out of disk space

A couple of quick answers, along with pointers to more info:

1. If this is truly a one-off and it won't happen again for another group, then you should probably just clone your existing disk alert and change the parameters.
2. It's NEVER just a one off and it WILL happen again.
3. So go into the node manager and view volumes. Add a few custom properties
   1. email_team (text field)
   2. warn_thresh (integer field)
   3. alert_thresh (integer field)
4. Ask your email admin to create the actual group account so that THEY can manage who gets the emails. Otherwise you will forever be stuck adding/removing people from that custom property in SolarWinds
5. Find the C and D drive for the server in question, and add the group email into the "email_team" field
6. Put 80 in the alert_thresh for both drives

Now, create an alert with the following logic:

IF email_Team is NOT blank

AND disk Util % >= field alert_thresh

that's your trigger.

Set up your actions - which should include an email notification AND you can use the email_team variable in the "TO:" field of the email.

That should get you started. Here's an episode of SolarWinds lab were we dig into some of the specifics of alert design.

All About Alerts - SolarWinds Lab #42 - YouTube

Leon is 1000% right on this it will never be a one off. it will become the standard:)