Adaptec SATA AND SCSI RAID CONTROLLERS - Manual (Page 145)

E-4
About RAID
RAID 10
This dual-level RAID type is created by using two or more equal-
sized RAID 1 arrays to create a RAID 0. Both read and write
performance are improved due to array striping. However, the
performance improvement costs additional storage space due to
the mirroring of the arrays.
Drive
RAID 1 RAID 1 Top-Level Arrays
Second-Level Arrays
Data 2
Data 4
Data 6
RAID 10
Data 2
Data 4
Data 6
Data 0
Data 2
Data 4
Data 6
Data 0
Data 3
Data 5
Data 7
Data 1
Data 3
Data 5
Data 7
Data 1
Data 3
Data 5
Data 7
Data 1
Drive Drive Drive
Data 0