I am currently exploring NB Master VA. I have few confusions. Is there a limit on the number of MS that can be managed by a Master VA. I did not find anything related to this in the product guide. However, If I look at the info from the below link it seems like there is a limitation.
The attached screenshot says that few network feature is also not supported. Means we can't perform Array-based snaps using Virtual appliance?
This may help you consider the options:
Veritas NetBackup™ Appliance Capacity Planning and Performance Tuning Guide
This lists the known network limitations of virtual appliances:
...see if you can find the same documentation for v3.2.