Chapter 1 Overview
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1.2 Configuration
Each RAID level description is shown below.
•
RAID0 (striping)
Data is split in unit of blocks and stored across multiple disks.
Figure 1.1
•
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
P3AM-3042-06ENZ0
ETERNUS DX60/DX80/DX90 Disk storage system User Guide
Data writing request
A
B
C
D
A
C
D
HDD0
HDD1
RAID0 concept
Data writing request
A
B
C
D
A
A
B
B
C
C
D
D
HDD0
HDD1
RAID1 concept
B
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