Number of in-
stalled 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 storage sys-
tem
48 RAID5 ´
5 40 1 2 Approx. 13.9TB Approx. 69.8TB
Figure 61 RAID Configuration Example (When 12 SSDs Are Installed)
Drive#5
Dr
ive#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 38 shows a guideline for the number of drives and user capacities when 1.2TB SAS disks are
installed and Figure 62
shows an example RAID configuration.
Table 38 Guideline for the Number of Drives and User Capacities (When 1.2TB SAS Disks Are Installed)
Number of in-
stalled 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 storage sys-
tem
6 or less RAID groups
cannot be cre-
ated
- - - - -
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
14 RAID6 ´ 2 8 1 1 Approx. 4.2TB Approx. 8.5TB
15 RAID6 ´ 2 8 1 2 Approx. 4.2TB Approx. 8.5TB
2. Basic Functions
Smart Setup Wizard
107
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems
Design Guide (Basic)
Copyright 2023 Fujitsu Limited
P3AM-7642-32ENZ0
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