Table 28 Chunk Size According To The Configured Tpp Capacity; Table 29 Levels And Configurations For A Raid Group That Can Be Registered In A Tpp; Figure - Fujitsu ETERNUS DX S5 Series Design Manual

2. Basic Functions
Operations Optimization (Virtualization/Automated Storage Tiering)
The following table shows the TPP chunk size that is applied when TPPs are created.
Table 28 Chunk Size According to the Configured TPP Capacity
Setting value of the maximum pool capacity
DX60 S5
Up to 128TB
2,048TB
(2PB)
*1: Chunk size is for delimiting data. The chunk size is automatically set according to the maximum pool capacity.
To perform encryption, specify encryption by firmware when creating a TPP, or select the Self Encrypting Drive
(SED) for configuration when creating a TPP.
The following table shows the RAID configurations that can be registered in a TPP.
Table 29 Levels and Configurations for a RAID Group That Can Be Registered in a TPP
RAID level
RAID0
RAID1
RAID1+0
RAID5
RAID6
RAID6-FR
• Thin Provisioning Volume (TPV)
The maximum capacity of a TPV is 128TB. Note that the total TPV capacity must be smaller than the maximum
capacity of the TPP.
When creating a TPV, the Allocation method can be selected.
Thin
-
When data is written from the host to a TPV, a physical area is allocated to the created virtual volume. The
allocated capacity size (chunk size) is the same as the chunk size of the TPP specified when a TPV is created.
The physical storage capacity can be reduced by allocating a virtualized storage capacity.
- Thick
When creating a volume, the physical area is allocated to the entire volume area. This can be used for
volumes in the system area to prevent a system stoppage due to a pool capacity shortage during operations.
In general, selecting "Thin" is recommended. The Allocation method can be changed after a TPV is created.
Perform a TPV/FTV capacity optimization if "Thick" has changed to "Thin". By optimizing the capacity, the area
that was allocated to a TPV is released and the TPV becomes usable. If a TPV/FTV capacity optimization is not
performed, the usage of the TPV does not change even after the Allocation method is changed.
The capacity of a TPV can be expanded after it is created.
For details on the number of TPVs that can be created, refer to
DX100 S5 DX200 S5
Up to 256TB Up to 384TB
4,096TB 6,144TB
(4PB) (6PB)
Number of configurable drives
4 (4D)
2 (1D+1M)
4 (2D+2M), 8 (4D+4M), 16 (8D+8M), 24 (12D+12M)
4 (3D+1P), 5 (4D+1P), 7 (6D+1P), 8 (7D+1P), 9 (8D+1P), 13 (12D+1P)
6 (4D+2P), 8 (6D+2P), 9 (7D+2P), 10 (8D+2P)
13 ((4D+2P) ´2+1HS), 17 ((6D+2P) ´2+1HS)
31 ((8D+2P) ´3+1HS), 31 ((4D+2P) ´5+1HS)
DX500 S5 DX600 S5
Up to 1,024TB Up to 1,536TB
16,384TB 24,576TB
(16PB) (24PB)
"Volume" (page
60
Chunk size (*1)
DX900 S5
Up to 8,192TB 21MB
131,072TB 336MB
(128PB)
Recommended configurations
—
2 (1D+1M)
8 (4D+4M)
4 (3D+1P), 8 (7D+1P)
8 (6D+2P)
17 ((6D+2P) ´2+1HS)
40).
Design Guide