I haven't read the article yet so maybe things have improved, but there used to be real problems if you RAID-ed your boot disk then had a problem. As long as you are only RAID-ing your D: drive that should be OK.

Since we were mostly looking to save $$ on application servers with small drives, this didn't help us much, but for a straight file server it should be pretty good.

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8