Figure 61 Raid Configuration Example (When 12 Ssds Are Installed); Table 38 Guideline For The Number Of Drives And User Capacities (When 1.2Tb Sas Disks Are Installed) - Fujitsu ETERNUS DX100 S4 Design Manual

2. Basic Functions
Smart Setup Wizard
Number of in-
stalled drives
48

Figure 61 RAID Configuration Example (When 12 SSDs Are Installed)

RAID5 × 2, Hot spare × 1, Unused drive × 1
Drive#0 Drive#1
Drive#5 Drive#6
*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

Table 38 Guideline for the Number of Drives and User Capacities (When 1.2TB SAS Disks Are Installed)

Number of in-
stalled drives
6 or less
7
8
9
10
11
12
13
14
15
Fujitsu Storage ETERNUS DX100 S4/DX200 S4, ETERNUS DX100 S3/DX200 S3 Hybrid Storage Systems Design Guide (Basic)
RAID configuration that is to be
created
Capacity of the
user data area
RAID group (equivalent
number of
drives)
RAID5 ´ 5 40
RAID5 group 1 (*1)
Drive#2 Drive#3
RAID5 group 2 (*1)
Drive#7 Drive#8
shows an example RAID configuration.
RAID configuration that is to be
created
Capacity of the
user data area
RAID group (equivalent
number of
drives)
RAID groups -
cannot be cre-
ated
RAID6 ´ 1 4
RAID6 ´ 1 4
RAID6 ´ 1 6
RAID6 ´ 1 7
RAID6 ´ 1 8
RAID6 ´ 1 8
RAID6 ´ 2 8
RAID6 ´ 2 8
RAID6 ´ 2 8
Copyright 2023 Fujitsu Limited
Hot spare Unused drive
1 2
Hot spare
Drive#4 Drive#10
Drive#9
Hot spare Unused drive
- -
1 0
1 1
1 0
1 0
1 0
1 1
1 0
1 1
1 2
107
User capacity
Per storage sys-
Per RAID group
tem
Approx. 13.9TB Approx. 69.8TB
Unused drive
Drive#11
User capacity
Per storage sys-
Per RAID group
tem
- -
Approx. 4.2TB Approx. 4.2TB
Approx. 4.2TB Approx. 4.2TB
Approx. 6.4TB Approx. 6.4TB
Approx. 7.4TB Approx. 7.4TB
Approx. 8.5TB Approx. 8.5TB
Approx. 8.5TB Approx. 8.5TB
Approx. 4.2TB Approx. 8.5TB
Approx. 4.2TB Approx. 8.5TB
Approx. 4.2TB Approx. 8.5TB
P3AM-7642-32ENZ0