Table 40 Method For Enabling The Deduplication/Compression Function - Fujitsu ETERNUS DX100 S4 Design Manual

3. SAN Functions
Operations Optimization (Deduplication/Compression)
The Deduplication/Compression function can be enabled by performing one of the methods be-
low.

Table 40 Method for Enabling the Deduplication/Compression Function

Condition of the TPP
A newly created TPP
A TPP that is created with a control-
ler firmware version earlier than
V10L70
A TPP that is created with a control-
ler firmware version V10L70 and lat-
er (the Dedup Ready setting is
specified when the TPP is created)
A TPP that is created with a control-
ler firmware version V10L70 and lat-
er (the Dedup Ready setting is not
specified when the TPP is created)
*1 : The chunk size can be checked in the detail display of the TPP.
*2: This setting is available only if the TPP is created with the AUTO mode. In consideration of
the load balancing for the Deduplication/Compression process, using this creation method is
recommended. If the TPP can only be configured with one RAID group, the Deduplication/
Compression function cannot be enabled.
*3: The Deduplication/Compression function can be enabled even if the TPP is configured with
only one RAID group. However, if the TPP is configured with one RAID group, the load of the
Deduplication/Compression processes cannot be balanced efficiently. Enabling the Dedupli-
cation/Compression function for a TPP that is configured with two or more RAID groups is
recommended.
*4: To create a TPP with a chunk size of 21MB, specify the Dedup Ready option when creating
the TPP.
*5: This function cannot be performed if the chunk size of the TPP is not 21MB.
Configuration method for the Deduplication/Compression function
•
There is an upper limit for the logical capacity of the Deduplication/Compression Volumes that
can be a deduplication/compression target. For details, refer to
likely to become larger than the current upper limit, expanding the logical capacity of the DED-
UP_SYS Volume according to the total logical capacity of the Deduplication/Compression Vol-
umes is recommended before creating the first Deduplication/Compression Volume.
Select the TPP where the Deduplication/Compression function is enabled, and create Deduplica-
tion/Compression Volumes (TPVs) in the selected TPP.
If I/O load exists in the ETERNUS DX, enabling or disabling the Deduplication/Compression func-
tion in the TPP may take time. If I/O load exists, changing the setting of the Deduplication/
Compression function for each TPP is recommended.
Specify whether to enable or disable the Deduplication/Compression function for each TPV. TPVs
(or Deduplication/Compression Volumes) where the Deduplication/Compression function is ena-
bled and disabled can exist together within the same TPP. However, these two types of TPVs
should be located in separate TPPs.
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
Chunk size (*1)
21MB
21MB
21MB
21MB
Other than 21MB
114
Copyright 2023 Fujitsu Limited
Creation method
Select AUTO mode and specify an
option for the Deduplication/
Compression function to enable the
function (*2)
Select a target TPP to enable the
Deduplication/Compression func-
tion (*3)
Select a target TPP to enable the
Deduplication/Compression func-
tion (*3) (*4)
Select a target TPP to enable the
Deduplication/Compression func-
tion (*3) (*4)
Deduplication/Compression func-
tion cannot be enabled (*5)
Table 39. If the logical capacity is
P3AM-7642-32ENZ0