This should be in EVERY linux RAID howto

echo -n 500000 > /proc/sys/dev/raid/speed_limit_max

Because it defaults to sooo slow to fix raids.. and you can just turn it up… so lame that it’s not in every howto.

It is in this howto http://togami.com/~warren/guides/remoteraidcrazies/

Which has a few steps I didn’t use, using Gentoo, but was a great walkthrough…