I'd second what Sunny and Isaac said. Ubuntu is what I know best from other applications, so it's probably what I'd use for this too, especially with the upcoming LTS release. That said, I have heard good things about FreeNAS especially, so it could be worth looking into as well.<br>
-- <br>Tony Yarusso<br><a href="http://tonyyarusso.com/">http://tonyyarusso.com/</a>