In that case I’d recommend spending more of your budget on a higher end Mac Pro, such as the 8 or 12 core loaded up with RAM and less on the storage. You’d get by fine with a Thunderbolt G-RAID and not the beefier Enterprise class solutions on the page you linked to which are better suited to multiple streams at higher data rates and resolutions than 1080p/H.264.
You need transcoding/processing speed for H.264 more than fast storage as you’re only dealing with a single stream of relatively low data date. Also, the more beefy the Mac Pro you get now, the longer it will last you as formats increase and system requirements raise over the years. (Shameless plug: the company I work with, FCPWORKS has these sorts of turnkey systems in stock with FCPX workflow consultation included. If you’re interested in putting together a system ready to roll, drop me a line through the link in my signature below).
Noah
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