I have done migration of content db from 2010 to 2013. Now I want to upgrade site collection using Upgrade-SPSite command but problem is this site collection contain more than 100 sub sites.
Last time I did this upgrade it took more than 3 days to complete. So I was thinking if it is possible to do upgrade of only specific sites rather than whole site collection?
This way I can do let's say 10 sites at a time on weekends rather than facing 3 days downtime like before.