Comment 72 for bug 97655

Stavros--
You may know this already, but in case you don't:

 you can load the module at startup by adding it to:
 /etc/modules

As for mounting at boot, you must add an entry to your
/etc/fstab
This should include the filesystem and read/write permissions.

Hope it helps!
Can you confirm that it is indeed RAID5?

Thanks