ASROCK Fatal1ty H87 Performance Installation And Configuration Manual page 4

Intel Rapid Storage
The Intel Rapid Storage technology supported allows you to
create a RAID 0 and RAID 1 set using only two identical hard
disk drives. The Intel Rapid Storage technology creates two
partitions on each hard disk drive to create a virtual RAID 0
and RAID 1 sets. This technology also allows you to change
the hard disk drive partition size without losing any data.
RAID 10
RAID 10 is a striped configuration with RAID 1 segments
whose segments are RAID 1 arrays. This configuration has the
same fault tolerance as RAID 1, and has the same overhead
for fault-tolerance as mirroring alone. RAID 10 achieves high
input / output rates by striping RAID 1 segments. In some
instances, a RAID 10 configuration can sustain multiple simul-
taneous drive failure. A minimum of four hard disk drives is
required for this setup.
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