Creating an Array
Now that the kernel supports RAID and you have the required
utilities, it’s time to partition disks and create arrays. At this
point, all disks that you plan to include in an array should be
connected to the system. Remember that each array can contain a maximum
of MD_SB_DISK, as defined by the kernel. By default,
that maximum is 27, but since arrays can also act as member disks, this
limit is avoidable. In addition, a maximum of 256 software RAID devices
are available for use.
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