## Diagnose

This section provides an overview of the diagnostic tests available from the Storage Automated Diagnostic Environment GUI and the command line interface. In addition, this chapter covers test options, requirements, and rules.

With two exceptions, you can run Storage Automated Diagnostic Environment diagnostic tests from either Test from List or Test from Topology.

- You can invoke the Link Test by right-clicking the box in the link displayed in the topology. You cannot invoke the Link Test functionality using Test from List.
- Unconnected HBAs (HBAs that are not connected to any device) can only be tested using the Test from List option.