I'm experiencing the same thing described by "brett_b2" in their post "Disk Mount missing for Custom Driver-mounted disk"
One observation I have made though, is that when I go to the Host, then Disk analysis, the mount DOES appear sometimes based on the GTF selector.
And only shows during times where it experienced activity.
My dumb question is with regards to why it only appears when it has activity.
Is this just how Dynatrace operates? No IO, and no Throughput, means no monitoring?
Or, could this be something on the Infra side? Where the disks sleep when not in use?