We run PowerShell script as scheduled task on server. Job checks free space on disks and reports if space falls to less than x%. This works 99% of the time. Periodically, however, we have alerts because the job reports 0% space across all drives. A check through Windows confirms this is not the case. We get several reports like this then all reverts to normal. We would like to understand why this happens and what we can do to avoid that false alarm.
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