Huge difference between ext4 3TB partitions
I have two 3 Terabytes (GPT) partitions that show a huge difference in used data after a clean ext4 format. I am trying to understand why.
Partition 1, created on a physical 3TB disk shows 42GB used after clean format.
Partition 2, created on a 4 x 1TB raid5 array shows 201MB used after a clean format.
- Both partitions are almost identical in size.
- They have been created with identical commands.
- They have the same block size and amount of inodes.
- I did try all alignments types on the physical disk (parted -a; minimal, optimal, cylinder, none) but it does not make a difference.