Fujitsu ETERNUS DX S5 Series - Figure 62 RAID Configuration Example (When 12 Ssds Are Installed); Table 55 Guideline for the Number of Drives and User Capacities (When 1.2 TB SAS Disks Are Installed)

Number of
installed drives
RAID configuration that is to be
created
Hot spare Unused drive
User capacity
RAID group
Capacity of the
user data area
(equivalent
number of
drives)
Per RAID group Per ETERNUS DX
48
RAID5 ´ 5
40 1 2 Approx. 13.9TB Approx. 69.8TB
Figure 62 RAID Configuration Example (When 12 SSDs Are Installed)
Drive#5
D
rive#6 Drive#7 Drive#8 Drive#9
RAID5 × 2, Hot spare × 1, Unused drive × 1
RAID5 group 1 (*1)
Hot spare Unused drive
Drive#0
Drive#1 Drive#2 Drive#3 Drive#4 Drive#10
Drive#11
RAID5 group 2 (*1)
*1: The capacity of the user data area is equivalent to four drives.
● For SAS Disks, SAS SEDs, Nearline SAS Disks, Nearline SAS SEDs
RAID groups are created with RAID6, which has high storage efficiency.
Table 55 shows a guideline for the number of drives and user capacities when 1.2TB SAS disks are installed
and Figure 63 shows an example RAID configuration.
Table 55 Guideline for the Number of Drives and User Capacities (When 1.2TB SAS Disks Are Installed)
Number of
installed drives
RAID configuration that is to be
created
Hot spare Unused drive
User capacity
RAID group
Capacity of the
user data area
(equivalent
number of
drives)
Per RAID group Per ETERNUS DX
6 or less RAID groups
cannot be
created
- - - - -
7
RAID6 ´ 1
4 1 0 Approx. 4.2TB Approx. 4.2TB
8
RAID6 ´ 1
4 1 1 Approx. 4.2TB Approx. 4.2TB
9
RAID6 ´ 1
6 1 0 Approx. 6.4TB Approx. 6.4TB
10
RAID6 ´ 1
7 1 0 Approx. 7.4TB Approx. 7.4TB
11
RAID6 ´ 1
8 1 0 Approx. 8.5TB Approx. 8.5TB
12
RAID6 ´ 1
8 1 1 Approx. 8.5TB Approx. 8.5TB
13
RAID6 ´ 2
8 1 0 Approx. 4.2TB Approx. 8.5TB
2. Basic Functions
Smart Setup Wizard
125 Design Guide