https://learn.microsoft.com/en-us/answers/questions/5861758/need-to-migrate-the-susite-to-a-new-main-site
Need to migrate the susite to a new main site - Microsoft Q&A
In my microsoft tenant of the pooled storage of 25 TB 23.9 Tb were occupied and i need to migrate the subsite which contains 15 TB of storage into a new site...
to migratemain siteneed