And selecting the disk footprint btfs (5% occupancy) and the group Hui ext4 file system format

1 Select ext4 personal feeling can, after all important data sets raid1

Unimportant data do not need any snapshot

Except for commercial

For the hard disk of a 4t

Actual capacity 3726G

Use ext4 space available 3666G, 60G Synology occupy about 1.6%

 If you replace the btrfs is occupied by many, only about 3574 are available, taking up about 4% 152G

 

 

 

 So individual users, non-critical data, or use ext4 it,