RAID is always difficult because of cost and data safety. Even if one is 4x richer than the rest of the population, RAID 0+1 is not exactly as safe as having just one disk drive for one volume simply because one needs multiple disks even to access the stored data normally.
I got 12 WD LB drives, 160GB ones, on Friday. I bought a used 3ware 8-ch. P-ATA PCI card a few weeks ago. 4 LB's are in this PC, connected to a 6-ch. P-ATA PCI card. The rest is connected to 3ware.
I need to decide whether to use these as independent or as RAID 0. I'm not an advocate of RAID 5 or RAID 0+1. For personal use, I think such "redundancy" is too redundant to be pragmatic. If I were that affluent, I would have bought another 12 drives to backup the first 12 drives manually, copying the data from PC A to PC B through GbE LAN.
This is my first experience with a 3ware card and also my first with WD LB.