Promise Technology FastTrak S150 - Manual (Page 53)

Chapter 5: Disk Array Concepts
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Striping / Mirroring (RAID 0+1)
A combination of RAID 0 and RAID 1 arrays. It can increase performance by
reading and writing data in parallel while protecting data with duplication. A
minimum of four drives are required.
With a four-drive disk array, two pairs of drives are striped. Each pair mirrors the
data on the other pair of striped drives. The data capacity is similar to a standard
Mirroring array with half of total capacity dedicated for redundancy.
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Disk Drives
Data
Mirror
Data Stripe