Fujitsu ETERNUS DX S5 Series Configuration Manual page 124

6. Configuration Settings for RAID Groups or Thin Provisioning
When Using Thin Provisioning Volumes (TPVs)
- Thin Provisioning Pool Total Capacity
Alarm
-
Caution
When using SSDs, the SSD types (SSD-M/SSD-L) cannot be specified. SSDs that are the same type
and have the necessary capacity in a RAID group to create TPPs are selected. If the number of SSDs
with the same type is insufficient for configuring a RAID group, a TPP is not created. In this case,
reduce the total capacity of the Thin Provisioning Pool.
When using SSD SEDs, the SSD types (SSD-M SED/SSD-L SED) cannot be specified. If "SSD SED" is
selected for the drive type, drives are operated the same way as SSDs.
If "High Performance (RAID1+0)" or "High Capacity (RAID5)" is selected for the RAID level, RAID
groups cannot be created with drives that are 6TB or larger (except SSDs and SSD SEDs).
Note
The maximum capacity that can be used to create new TPPs is displayed to the right of the setting
field for "Thin Provisioning Pool Total Capacity" in the "(Max: xx.xx [PB/TB/GB/MB])" format.
3
Click the [Create] button.
4
A confirmation screen appears. Click the [OK] button.
Create Thin Provisioning starts.
5
Click the [Done] button to return to the [Thin Provisioning Pool] screen.
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Manually Selecting Drives to Create TPPs
To create a new TPP manually, select Drive Type, RAID Level, and the drive that configures the TPP.
The number of member drives in each RAID group
The number of member drives for each RAID level is listed in the following table.
RAID level
High Performance (RAID1+0)
High Capacity (RAID5)
High Reliability (RAID6)
High Reliability (RAID6-FR)
Mirroring (RAID1)
Striping (RAID0)
Requirements for selecting drives
The conditions for RAID groups in the TPP are as follows:
•
The RAID level (High Performance (RAID1+0) / High Capacity (RAID5) / High Reliability (RAID6) / High
-
Reliability (RAID6-FR) / Mirroring (RAID1) / Striping (RAID0)) must be the same
- The number of member drives in the RAID group must be the same
The drive type (Online/Nearline/SSD/Online SED/Nearline SED/SSD SED) must be the same
-
If "High Performance (RAID1+0)" or "High Capacity (RAID5)" is selected for the RAID level, RAID groups
-
cannot be created with drives that are 6TB or larger (except SSDs and SSD SEDs).
Number of member drives
4, 8, 16, 24
4, 5, 7, 8, 9, 13
6, 8, 9, 10
13, 17, 31
2
4
124 Configuration Guide (Basic)