Fujitsu Eternus2000 Manual page 29

• 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 drive fails, other disk drive continues operation.
HDD0
Data is stored on two disks at the same time.
Figure 1.2
P3AM-2512-03EN ETERNUS2000 disk storage system User Guide
Data writing request
A B C D
A B
C D
HDD0 HDD1
Data is stored in multiple disks.
RAID0 Concept
Data writing request
A B C D
A
B
C
D
HDD1
RAID1 Concept
Copyright 2009 FUJITSU LIMITED
A
B
C
D
Chapter 1 Overview
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