I got it up and running. I have a few questions for you guys though. With compression on, I'm only getting around 30MB/s on write. Does this sound about right? I'm writing movies, so they are large files, not a bunch of small files.

My setup is:
1x320GB HDD for system
2x1TB RAIDZ1

Compression on, dedup off

I wrote a smaller work load much faster, ~110MB/s. When ordered the server to write 60GB worth of movies, it went to 30MB/s, and I lost access to the GUI web interface. I'm guessing I am running into RAM issues. I think I may buy 2x40GB SSDs for a mirrored system drive and buy another 8GB of RAM for 16GB total.

Any suggestions?