cdm probe is generating duplicate alerts for default disk monitoring on some platforms, so that the alert count is going up by 2 in one interval.
This is not happening on every interval, but on a consistently regular basis.
Reproducible defect related to the disk_status callback. In this case a custom probe was issueing this callback and causing the behavior described.
cdm-8.01-T5 contains a fix for this issue. Open a case with Broadcom support to obtain this fix.