Hi Walter,
Firstly thanks for your clear and direct response to my question as it gave me more assurance that i am on the right track with the setup.
As you recommended i actually have ordered one of those PCIe > 2 x SSD cards that is 6gb/s and can handle two SSD drives on the one card, what i intend to do is use my current SSD for OS and Apps and buy another one to replace my current WD 1TB Caviar Black 3.5″ internal cache drive with that SSD also connected to the PCIe controller at 6gb/s.
My 6TB Striped Raid (3 x WD 2TB 7200rpm 64m cache 3.5″ HDD) is quite fast 500mb/s + so i am quite pleased with that for media storage and rightfully as you said is for speed not redundancy ( i do have a separate workstation ( Mac ) with and identical Raid which backs up every hour through time capsule … and this workstation only backs up ( it does not even have a screen attached to it ) so is fairly much a “glorified NAS drive”, but rather safe than sorry.
Looking forward to your response on my next step above to hear if it is in the right direction…
Kind Regards,
Mark