Do you think RAID-5 is ubiquitous? Straightforward? Been there, done that?
When you determine that your application needs an underlying RAID solution, do you think that RAID is commodity? Do you think that it's old? Do you pick from a menu of RAID solutions based on cost?
I'm here to tell you that not all RAID solutions are the same. And there are two very, very important questions that to ask of any RAID solution:
Got DIBs? And if so, where are they?