Smart Setup Wizard; Table 54 Guideline For The Number Of Drives And User Capacities (When 1.92Tb Ssds Are Installed) - Fujitsu ETERNUS DX S5 Series Design Manual

2. Basic Functions

Smart Setup Wizard

Smart Setup Wizard
The Smart Setup Wizard simplifies the creation of Thin Provisioning Pools and configuration of host affinity for
configurations enabled with Thin Provisioning.
For the procedure on configuration using the Smart Setup Wizard, refer to "Configuration Guide (Basic)".
Note
If a Thin Provisioning Pool has not been created, the Smart Setup Wizard automatically creates one. The
Thin Provisioning Pool configuration is automatically determined based on the type and number of
installed drives.
• The priority for selecting drive types is as follows.
SSD > SSD SED > SAS > SAS SED > Nearline SAS > Nearline SAS SED
If multiple drive types exist, the drive type with the highest priority is selected to create a Thin
Provisioning Pool.
To create another Thin Provisioning Pool with the unselected drive types, this wizard cannot be used.
Use the dedicated function provided by this storage system to create a Thin Provisioning Pool.
• The RAID levels and the number of drives for RAID groups that configure the Thin Provisioning Pool are
as follows.
Drive type
SSD and SSD SED
SAS, SAS SED, Nearline SAS, and Nearline SAS SED
• A Global Hot Spare is registered for each Thin Provisioning Pool.
The following shows an example of creating a Thin Provisioning Pool using the Smart Setup Wizard.
●
For SSDs and SSD SEDs
RAID groups are created with RAID5, which has high storage efficiency.
Table 54 shows a guideline for the number of drives and user capacities when 1.92TB SSDs are installed and
Figure 62 shows an example RAID configuration.
Table 54 Guideline for the Number of Drives and User Capacities (When 1.92TB SSDs Are Installed)
Number of
installed drives
4 or less
5
6
7
8
9
10
RAID configuration that is to be
created
Capacity of the
user data area
RAID group (equivalent
number of
drives)
RAID groups -
cannot be
created
RAID5 ´ 1
3
RAID5 ´ 1
4
RAID5 ´ 1
4
RAID5 ´ 1 6
RAID5 ´ 1
7
RAID5 ´ 1
8
RAID level
RAID5
RAID6
Hot spare Unused drive
- -
1 0
1 0
1 1
1 0
1 0
1 0
123
Number of drives
Five or more
Seven or more
User capacity
Per RAID group Per ETERNUS DX
- -
Approx. 5.2TB Approx. 5.2TB
Approx. 6.9TB Approx. 6.9TB
Approx. 6.9TB Approx. 6.9TB
Approx. 10.4TB Approx. 10.4TB
Approx. 12.2TB Approx. 12.2TB
Approx. 13.9TB Approx. 13.9TB
Design Guide