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3.
SAN Functions
Operations Optimization (Deduplication/Compression)
●
Deduplication Function
This function removes duplicate data blocks and stores the data.
Figure 67 Deduplication Overview
Data 1
A
B
A
B
●
Compression Function
This function compresses each data block and stores the data.
Figure 68 Compression Overview
Data 1
A
B
A
B
FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
Business server 1
C
D
Data 1 is
written
C
D
Analysis
Deduplication
Duplicate data blocks are removed
A
B
C
Target volume for deduplication
Business server 1
C
D
Data 1 is
written
C
D
Compression:
Data blocks are compressed
A B C D A B E F
Target volume for compression
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A
B
Data 2 is
written
A
B
D
E
F
ETERNUS DX
A
B
Data 2 is
written
A
B
ETERNUS DX
113
Business server 2
E
F
Data 2
E
F
Business server 2
Data 2
E
F
E
F
P3AM-7722-25ENZ0
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