Here's my scenario:
- I have 7 drives in my pool - all are 4TB except for one 2TB.
- I have 5.8 TB free in total
- All drives were added last week and early this week (well I added several NEW and then swapped out old 2 TB drives).
- The first 4 drives (one of which is the 2TB) each have 135 GB of free space - so obviously DrivePool balanced these out.
- Of the remaining 3 drives, one has 414 GB free and the last 2 added (I know this based on the drive volume naming scheme) each have 2.44 TB free.
So it seems DrivePool "balanced" the last 2 - 4TB drives out also - but does this