UFS vs FAT32

[hirohitosan]

Hi there.
I have an external HDD formatted Fat32. I copied from from that HDD a lot of files to my FreeBSD box with copy command.

$ cp -R /mnt/hdd-extern/backup/FAT32-formatted/ /disk/data/backup/UFS-formatted/

No error messages. At the end on my Fat32 source the directory has 268G and on my UFS destination I have 237G

$ du -hs /disk/data/backup/UFS-formatted/
237G    /disk/data/backup/UFS-formatted/
$ du -hs /mnt/hdd-extern/backup/FAT32-formatted/
268G    /mnt/hdd-extern/backup/FAT32-formatted/

This is because of different file system or something goes wrong when I copied the files?

thanks

 

[SirDice]

It's because they're different filesystems. FAT32 is not really efficient especially with large volumes as the block sizes get rather big.

http://en.wikipedia.org/wiki/Comparison_of_file_systems