After a Failover Test has been completed going into Azure, the bootdiagnostics container is not removed from Azure, along with all of the disks within the container. If not removed, this can cause additional Azure storage costs.
This is a known issue in Zerto 7.0 Updates 0, 1, and 2. Development is currently working on a fix.
Workaround: Manually delete remaining bootdiagnostics container and all disks within the container