Figure 22 Details Of The Deduplication/Compression Function - Fujitsu ETERNUS AF250 Design Manual

1. Function
Operations Optimization (Deduplication/Compression and Storage Virtualization)
●
Functional Details

Figure 22 Details of the Deduplication/Compression Function

Server
A A
B B
C E
D F
I/O request
Deduplication/
Compression
Volume
(a virtual volume
that can be seen
from the server)
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.
A Maps the Deduplication/
A
Compression Volume
B
B
(or the virtual volume)
E
C
and the actual written data
F
D
DEDUP_MAP0
(TPV)
Non-Deduplication/
Compression
Volume
FUJITSU Storage ETERNUS AF250 S2, ETERNUS AF250 All-Flash Arrays Design Guide (Basic)
Copyright 2019 FUJITSU LIMITED
Thin Provisioning Pool (TPP)
DEDUP_SYS (TPV)
A
DEDUP_MAP1
B
(TPV)
C
D
Actual written data after
deduplication/compression
44
ETERNUS AF
E
F
P3AG-1822-09ENZ0