LO Total Capacity Report mismatch

Team, 

Hi, I hope you can help me on this one. Based on LO Project 1960732, I found that Total Capacity shown is around 57TB but, once I imported the project to vxrailsizer it turned into almost 90TB and I do not why.

If I go to the Virtual tab inside the project, I also see that there is Recalimable space for around 30TB. What is this and how do I have to consider it in terms of sizing (input) ?

Regards, 

Guido