Remember that application update you were doing at 2AM three months ago? You know, the one where step 1 in your change document was to take a VMWare snapshot of the VM you were about to make changes to? Of course you do, because you’re a good admin like that. We’ve all been there, you take a snapshot of a VM and after a successful change you jump right to the “Miller time” step, completely disregarding the “remove snapshot step”. Well instead of being reminded that you left that snapshot hanging out there with a full datastore, you should schedule this report to run daily or weekly and save yourself the headache.