I recommend this as minimum (in rc.local for instance):

for x in /sys/block/sd[a-z] ; do
        echo 180  > $x/device/timeout
done

echo 4096 > /sys/block/md0/md/stripe_cache_size

Done. I will see how this nets out for me here. I will work on switching 
over to enterprise or nas rated drives with proper error timing. In the 
meantime, I will keep my LTO backup up to date.

Thanks for your help.

- Justin