I'm making the PC to Mac switch. (Yay!) I have purchased all the following and now I am needing help on setting up and configuring. Sorry if my questions seem dumb or obvious. Here's what I have: mac pro with two 3.2ghz processors. 10 GB memory (upgraded from OWC) Original 500 GB hard drive (not sure of make) WD Velociraptor 300GB HD-SATA 10K RPM Caviar Black 1TB 7200RPM w/32MB Cache 3Gb/s RocketRAID 2640X4 PCI-Express x4 SAS RAID Controller I use my machine mainly for imaging (professional photographer) and will be running Photoshop CS4 and Lightroom 2. I am wanting to run a scratch drive for Photoshop (and just because I can say it doesn't mean I know how to set it up). and I'm wanting optimal performance with a back-up drive. (I can also return any of the hardware I bought, if I've made a terrible mistake). So. How should I configure my machine? I'm really a newbie at this, so I'm not even sure which steps should go first (in terms of installing the RAID or drive). But what kind of set-up makes the most sense, and how can I best utilize my drives? I realize there are probably many different ways to configure this, but I was wondering what advice any of you expert users would have. Thank you very much for your help. I appreciate all the advice I can get.