I have a 2009 Mac Pro with a 4-drive WD RE4 RAID0 that I'm pretty happy with for data like iTunes, movies, etc. I would like to remove my optical and use the two drive bays to run a boot AND user data disk, with dual 3.5" OCZ Vertex 2's on Apple's software RAID0. Is there any downside to this? Yes I know many random reads and writes are bad for it in some way I'm not totally clear about, but I don't care that much, it's 2 drives, not the holy grail and I imagine I'll toss 'em in the trash within 2 years or so and get the next latest/greatest thing. What I'd really like is a massive speed increase in spotlight, I have many many small files and using spotlight right now is pretty slow. Is there any downside to booting a Mac Pro with Snow Leopard using dual SSDs set up on a RAID0? Will it work or does it break something random and would I be better off using one for boot and the second one for user data? I'd prefer not to do this, because my understanding is that dual Vertex drives on RAID0 are going to give me in the neighborhood of 500K reads and writes. Do many small files (like 800K pieces of email, all of which are quite short) conflict with this theory? Thank you in advance to anyone who can share their insights or observations.