The UML provides only this type of diagram for deployment and infrastructure, therefore you have no practical alternative.
On the other hand, you can of course use any free form of diagram to depict your technical infrastructure.
Make sure that stakeholders understand such notations - and that architecture- and infrastructure decisions can be understood based upon these diagrams.
Please add textual explanation (e.g. a table!) to your diagrams, where you briefly explain the elements, their responsibility and any additional information that is required to understand the situation.
Often it will be useful to reason about the diagram: Explain why the structure shown is useful and what argumentation lead to the appropriate decisions.