Figure 4.1 Raid0 Concept; Figure 4.2 Raid1 Concept - Fujitsu ETERNUS DX80 S2 Overview

Chapter 4 System Configuration
4.1 RAID Levels
Each RAID level description is shown below.
●
RAID0 (striping)
Data is split in unit of blocks and stored across multiple drives.

Figure 4.1 RAID0 concept

A
C
HDD0
●
RAID1 (mirroring)
RAID1 stores the same data on two duplicated drives at the same time.
If one drive fails, other drive continues operation.

Figure 4.2 RAID1 concept

Data writing request
A
B
C
D
HDD0
Data writing request
A B C D
B
D
HDD1
A B C D
A
B
C
D
HDD1
ETERNUS DX80 S2/DX90 S2 Disk storage system Overview
Copyright 2013 FUJITSU LIMITED
33
P3AM-4812-11ENZ0