Promise Technology FastTrak S150 SX4 Uživatelský manuál stáhnout pdf (Strana 53)

Chapter 5: Disk Array Concepts

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.

Disk Drives

Data

Mirro

Data Stripe

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 73 74

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Promise Technology FastTrak S150 SX4 Uživatelský manuál Strana 53