[ubuntu] Raid 6 vs Raid 10

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http://ubuntuforums.org – Hi all, I'm setting up a backup server (yes, I know raid isn't a backup). I purchased 4 3TB drives, and I was thinking, is there any point to the performance boost Raid 10 gives over Raid 6? All the accesses will be remote, so even with Gigabit ethernet, I'll max out at 125 MB/s (theoretical). With USB drives running at 480 MB/s (theoretical), it seems like it shouldn't be an issue running Raid 6 (and getting guaranteed recovery from 2 drives failing), since the network will be the bottleneck anyway. Or, is the write performance of Raid 6 that horrible? Actually, I think I figured out (Hardware)