● Functional Details
Figure 22 Details of the Deduplication/Compression Function
Deduplication/
Compression
Volume
(a virtual volume
that can be seen
from the server)
ETERNUS AF
Server
I/O request
Thin Provisioning Pool (TPP)
D
C
B
A
DEDUP_MAP0
(TPV)
Non-Deduplication/
Compression
Volume
DEDUP_MAP1
(TPV)
Actual written data after
deduplication/compression
DEDUP_SYS (TPV)
Maps the Deduplication/
Compression Volume
(or the virtual volume)
and the actual written data
D
C
B
A
F
E
B
A
F
E
B
A
D
C
B
A
F
E
Note the following when using the Advanced Copy functions for Deduplication/Compression Volumes.
•
The CPU usage rate may increase depending on the EC/OPC priority setting. Be cautious of an I/O perform-
ance reduction.
•
The copy performance may be significantly reduced when compared to non-Deduplication/Compression Vol-
umes (TPVs).
•
When using copies between
ETERNUS AF storage systems, data without deduplication and compression is
sent to the copy destination. In addition, the bandwidth of the remote lines might not be fully utilized in
some cases.
1. Function
Operations Optimization (Deduplication/Compression and Storage Virtualization)
44
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays
Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
P3AG-1822-09ENZ0
To Next Page
Loading...
