Fibre Channel and RAID Arrays

reptyle asks: "Anyone have useful experience with Fibre Channel RAID arrays? I deal with some Seagate Barracudas and one or another fails once in a while, but with no regularity. Before you ask: Yes, they are RAID5 compliant. The problem here is that I have trouble tracing the origin of the failure; it's not always the same hard drive; it's not necessarily the encasement or the adapter, and it's not clear what it is. But I suspect the particulars are less interesting than general collective testimonials of experience. I read that FC-AL is the kick-ass hot commodity, but I'm having problems seeing the performance boosts over the SCSI that were promised. I've read the FAQS, installed the latest firmware and drivers, and replaced individual hard drives, all to no avail. Any insights?"