According to this IBM page,
RAID level-x0 allows more physical drives in an array. The benefits of doing so are larger logical drives, increased performance, and increased reliability.
So say, instead of having a single RAID 0 array with four drives, you could span two RAID 0 arrays into a single RAID 0 array. Would this would give a performance increase? I'd guess no, that it wouldn't make any difference, but I wanted to check before completely ruling it out as a possibility. Or is IBM saying that RAID 00 offers a performance increase only because it allows you to put more than 16 drives in a single logical array?
I'm purchasing a LSI 9260-8i RAID controller for four SSD drives, which supports RAID level 00. We are all about getting the best IO performance in this particular application, so hence the RAID 0.