Hi brietmax,
if I understand you (to be honest, that is not so easy ;)), you have to configure in Aria Automation Orchestrator the vSphere Plugin and connect to the vCenter, where you want to mount the CD-ROM.
Be aware, that you need the full path to the ISO file on the datastore to mount it - that could be a challenge without browsing the datastores.
Also note that, at least up to Orchestrator 8.18.1, the default CD-ROM is mounted on an IDE controller.
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