## Diagnostic Test Rules

Certain tests have limitations and cannot be run with other tests. The following rules exist with Storage Automated Diagnostic Environment diagnostic tests:

- All tests are offline tests that can be used to verify and replace FRUs.
- All devices and paths must be quiesced prior to invocation of diagnostic tests.
- switchtest can run only on one port on a single switch instance at a time.
- `linktest` cannot be run with other tests, and can only be run using Test from Topology. You cannot run `linktest` using Test from List.
- The Link Test enables FRU isolation for Fibre Channel devices. You can invoke the Link Test from the Topology view by selecting the link.
- In-band tests can be run from the Test from Topology view with no restrictions.
- An out-of-band test (for example, 6120ofdg or switch2test) can be run from the Test from Topology view under the following conditions:

- It is run from the monitoring host view, or
- It is run from the merged topology view.

Note -

Any attempts to ignore or circumvent diagnostic test rules will cause pop-up warnings to display.