I've been using FreeNAS for a couple of months now. But last week was the time when I said "enough is enough". I've been increasingly frustrated with its stability. I've seen all kinds of kernel panics. I've used a lot of values to tweak it to the right performance. Last week it got me to worry that I might lose the company's data because we use it as our file server. The management GUI is great though. But the CIFS performance was a pity. After doing some reading on the internet I decided to switch to OpenIndiana. I am using napp-it as the GUI but I have to use command lines to get some ACL going because the non-trivial ACL settings via the GUI is not free unless you contribute to napp-it's development. So far the speed is really good and consistent (not bursty like it used to with FreeNAS). I'm going to see if this is stable over the coming few weeks.