Which RAID/LVM configuration for new 2x8TB file server is safest?

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http://serverfault.com – I just built a totally new PC to be a fileserver. It has one 60gb SSD for OS (ubuntu 12.04), and 8 2tb data drives in it. I am looking for the safest, most stable way to set up a single giant storage pool with redundancy. Considerations: My TOP priority is protection of the data. Availability, reliability, resiliency, recoverability, and risk management. All of those words which mean not losing my files. I'm not merely concerned with the theoretical risks implied by the nature of the raid types, but also practical considerations of simplicity, and minimum points of failure. Especially (HowTos)