VM disk size historical report??

Hello everyone,

I'm trying to find a report that shows historical allocation of SAN storage to individual VM's. So far I have been unsuccessful. An example is that I have a file server that started at 100gb then 2 weeks down 50gb was added and 1 month down another 50gb is added. I need a report to show the additions/changes to the original size. The ideal report would include all VM's that had disk changes within a certain time period and includes logical partition letter and size. I don't mind if I have to run the report on one cluster at a time. Can this be done? Thanks in advance.