ZFS obn FreeBSD hardware model for 48 or 96 sata3 paths...

[Artem Belevich]

On Mon, Sep 19, 2011 at 12:07 PM, Jason Usher <jusher71 at yahoo.com> wrote:
> Can I explicitly cache metadata/dirs in RAM, and cache file data in L2ARC ?

See primarycache and secondarycache properties. They determine caching
policies for ARC and L2ARC respectfully. Valid values are none,
metadata and all.

So, the answer you your question above is yes for metadata in RAM and
no for data-only for L2ARC as there is no way to enable data chache
without metadata.

--Artem