Figure 1.1 Raid0 Concept; Figure 1.2 Raid1 Concept - Fujitsu Eternus DX60 User Manual

Chapter 1 Overview
1.2 Configuration
Each RAID level description is shown below.
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RAID0 (striping)
Data is split in unit of blocks and stored across multiple disks.
Figure 1.1
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RAID1 (mirroring)
RAID1 stores the same data on two duplicated disks at the same time.
If one disk fails, other disk continues operation.
Figure 1.2
Data writing request
A B C D
A
C
HDD0 HDD1
RAID0 concept
Data writing request
A B C D
A A
B B
C C
D D
HDD0 HDD1
RAID1 concept
ETERNUS DX60/DX80/DX90 Disk storage system User Guide
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B
D
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