luminousdolphin wrote:Curious here as well and noticed that the OPs original question was never answered.
A good source of information
http://docs.oracle.com/cd/E19253-01/819-5461/, also
http://www.solarisinternals.com/wiki/in ... ning_Guide.
The advice in those links is generally applicable to O3X and all other ZFS implementations. You will quickly learn that there are lots of things that can be done with ZFS, as to subjective concepts such as "best practice" well the answer inevitably varies with the use case. Up to you to test and evaluate your usage carefully.
I have one system with slog and l2arc running, and I'm sure its a little better in performance. I also have my main system that has none, and performance is great. You are better to have loads of RAM and run a larger ARC in general. There is a thing called persistent L2ARC coming downstream (who knows when), that may alter the value proposition somewhat.
Cheers
Brendon