I'm setting up software RAID on Ubuntu Server 10.04; specifically RAID10. It's asking for the number of active devices for the array and the number of spare devices.
I know RAID10 is two mirrored pairs; RAID0 for two sets of RAID1 arrays (correct me if I'm wrong).
I would just like to know if all the devices (I'm using 4) are considered active, or if I should be setting it as 2 active and 2 spare.