I´m looking for an API or SDK to show me all fixed disks not monitored yet.
If the volumes have been detected by Orion Discovery, you may be able to find them by querying Orion.DiscoveredVolumes using SWQL. If they have not been detected by Orion Discovery then the system won't be aware of them and can't report them in any API.
SolarWinds solutions are rooted in our deep connection to our user base in the THWACK® online community. More than 150,000 members are here to solve problems, share technology and best practices, and directly contribute to our product development process.