I have read the documentation for DDPEval.exe and various blogs and so on and cannot find any information on how to interpret the results.
I ran the tool on a drive on one of our servers and found the results confusing, particularly with regards to "Optimized files" and "compression". To try and get some more understanding I ran the tool again on a specific folder only, where is there no NTFS compression in place (contents are SQL Server backups). For brevity I will post only the results from this second test:
Evaluated folder size: 69.07 GB Files in evaluated folder: 6 Processed files: 6 Processed files size: 69.07 GB Optimized files size: 15.61 GB Space savings: 53.45 GB Space savings percent: 77 Optimized files size (no compression): 69.04 GB Space savings (no compression): 26.93 MB Space savings percent (no compression): 0
What do these numbers mean and is the tool telling me I can save 53.45GB or 26.93MB?