can be instantly routed should a server go down, so we may want to go with a different, faster, less secure RAID level. Is this an option with the 760, or does WAFL tie you to RAID 4?
With a filer, the only option is RAID 4. Is there something in particular that would make RAID 4 a poor choice for this application?
When you say "faster, less secure", what aspect of operations are you looking at?
Your performace milage will vary, depending on what exactly you are trying to do. But the cache the filers have, along with WAFL buy you a whole lot of performance.
If you want less security and can take a hit when a disk fails, then building huge raid groups would get you where you want to be, it sounds like.
good luck.
Alex