Disk space economy

[Dennis Glatting]

On Wed, 2014-07-23 at 17:29 -0400, Janos Dohanics wrote:
> Hello List,
> 
> I have a directory which contains 48 files. 35 of these files are
> large, close to 2 GB (reported by ls -l). 7 of the files a smaller than
> 4 K, the rest of the files are few dozen Ks in size.
> 
> This is a FreeBSD 10 system with ZFS and RAIDZ2.
> 
> du -h reports the directory to be 208G.
> 
> du -A -h reports the directory to be 69G.
> 
> It seems there is 2G wasted for each 1G stored data - would you explain
> why and what can I do make more economical use of disk space?
> 

Compression and/or dedup enabled?