Running out of disk space

We are currently running out of disk space on the Backup locations. 1) I understand that it depends on the amount of data we are backing up, but is there a way to determine how much compressed and de-dup space is actually being used by a VM? It seems that the amount of Repository disk space being used is always increasing, even though the VMs themselves are not getting larrger at the same rate. 2) Do you have a utility or a way to verify that there aren't "lost blocks"? For instance, I deleted a backup job that, according to the console, was taking over 1TB of space. After I deleted that job, I only saw about 400GB of disk space returned. I don't know for certain the size of the repository folder before I deleted it. Any help or suggestions are appreciated. Thanks for your time!

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