Greg Mason <gma...@msu.edu> writes:

> Harry,
>
> ZFS will only compress data if it is able to gain more than 12% of
> space by compressing the data (I may be wrong on the exact
> percentage). If ZFS can't get get that 12% compression at least, it
> doesn't bother and will just store the block uncompressed.
>
> Also, the default ZFS compression algorithm isn't gzip, so you aren't
> going to get the greatest compression possible, but it is quite fast.
>
> Depending on the type of data, it may not compress well at all,
> leading ZFS to store that data completely uncompressed.
Thanks for another little addition to my knowledge of zfs.  Good stuff
to know.

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