Need some help regarding replacement of HDD.
I've got a 4-Bay NAS running RAID using 4x 1TB HDD (total capacity is 4TB).
Recently one of the 1TB HDD seems to be faulty.
If I purchase a "new 3TB HDD" and swap out the "old faulty 1TB HDD", will the overall capacity still be 4TB?
Or the overall capacity will now be 6TB?
Let's say if I eventually swap out all the old 1TB ...