I was trying to determine file sizes for my Principle and Mirror databases using sys.sysaltfiles and sys.master_files. The actual (Primary) database size is around 1.8 TB which showed correctly when I executed the queries
select * from sys.sysaltfiles
select * from sys.master_files
But the same set of queries showing around 700 GB size for my Mirrored database.
Can anyone explain why it showing different sizes