AMCC 720-0140-00 Guide d'installation télécharger pdf (Page 18)

Chapter 1. Introduction to the 3ware Command Line Interface

12 3ware Serial ATA RAID Controller CLI Guide for the Power Mac G5

Figure 3. RAID 5 Configuration Example

RAID 10

RAID 10 is a combination of striped and mirrored arrays for fault tolerance

and high performance.

When drives are configured as a striped mirrored array, the disks are

configured using both RAID 0 and RAID 1 techniques, thus the name RAID

10 (see Figure 4). A minimum of four drives are required to use this

technique. The first two drives are mirrored as a fault tolerant array using

RAID 1. The third and fourth drives are mirrored as a second fault tolerant

array using RAID 1. The two mirrored arrays are then grouped as a striped

RAID 0 array using a two tier structure. Higher data transfer rates are

achieved by leveraging TwinStor and striping the arrays.

In addition, RAID 10 arrays offer a higher degree of fault tolerance than other

types of RAID levels (such as RAID 1 and RAID 5), since the array can

sustain multiple drive failures without data loss. Please note that if both halves

of a mirrored pair in the RAID 10 array fail, then all of the data will be lost.

Figure 4. RAID 10 Configuration Example

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AMCC 720-0140-00 Guide d'installation Page 18