Fujitsu DX440 S2 Computer Drive User Manual


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Chapter 7 Thin Provisioning Pool Management
7.2 Functions in the Action Area for Thin Provisioning
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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The procedure to create a TPP by selecting drives manually is as follows:
Procedure
1 Click [Create] in [Action].
2 Select "Manual" for the create mode, and specify the other parameters.
Name
Input a TPP name. An existing TPP name cannot be specified.
The following input conditions apply:
- Up to 16 alphanumeric characters and symbols (except ", (comma)" and "?")
- Spaces
Disk Type
Select the type of drive that configures the TPP from the list box. The drives that are installed in the
ETERNUS DX Disk storage system is displayed. When "Online" is selected for "Disk Type", "Online" or
"Nearline" disks can be selected. In this case, only the use of "Online" disks to configure a TPP is rec-
ommended.
- Online
SAS disks
- Nearline
Nearline SAS disks
- SSD
- SED
RAID Type
Select the type of RAID group that configures the TPP from the list box. The installed drive deter-
mine the selectable RAID types that are displayed as options.
- High Performance (RAID1+0)
RAID1+0(2D+2M, 4D+4M, 8D+8M, 12D+12M) configuration is available
- High Capacity (RAID5)
RAID5(3D+1P, 4D+1P, 7D+1P, 8D+1P, 12D+1P) configuration is available
- High Reliability (RAID6)
RAID6(4D+2P, 6D+2P, 8D+2P) configuration is available
- Mirroring (RAID1)
RAID1(1D+1M) configuration is available
The following shows the recommended drive configuration of the RAID group:
- Select drives with the same capacity. If drives of different capacities exist in a RAID group, the smallest
drive becomes the standard, and all other drives are regarded as the same capacity as the smallest
drive. In this case, the remaining drive space will NOT be used.
- Select drives with the same speed. If drives of different speed exist in a RAID group, access
performance of the RAID group may be affected.
- When "High Performance (RAID1+0)" or "Mirroring (RAID1)" is selected for the RAID type, locate the
drives (mirroring pair drives) divided into different lines (for ETERNUS DX410 S2/DX440 S2).
- When "High Capacity (RAID5)" or "High Reliability (RAID6)" is selected for the RAID type, locate the
drives (striping multiple drives) divided into two or more lines (for ETERNUS DX410 S2/DX440 S2).
When using the ETERNUS DX8100 S2/DX8700 S2, the restrictions that apply to the drive layout for RAID
group configuration. Refer to "Restrictions of drive layout" (page 179)
for details.