Figure 64 Raid Configuration Example (When 12 Ssds Are Installed); Table 37 Guideline For The Number Of Drives And User Capacities (When 1.2Tb Sas Disks Are Installed) - Fujitsu ETERNUS DX500 S4/DX600 S4 Design Manual

2. Basic Functions
Smart Setup Wizard

Figure 64 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 37 shows a guideline for the number of drives and user capacities when 1.2TB SAS disks are installed and
Figure 65 shows an example RAID configuration.

Table 37 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 DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
RAID5 group 1 (*1)
Drive#2 Drive#3
RAID5 group 2 (*1)
Drive#7 Drive#8
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 2019 FUJITSU LIMITED
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
109
Unused drive
Drive#11
User capacity
Per storage sys-
Per RAID group
tem
- -
Approximately Approximately
4.2TB 4.2TB
Approximately Approximately
4.2TB 4.2TB
Approximately Approximately
6.4TB 6.4TB
Approximately Approximately
7.4TB 7.4TB
Approximately Approximately
8.5TB 8.5TB
Approximately Approximately
8.5TB 8.5TB
Approximately Approximately
4.2TB 8.5TB
Approximately Approximately
4.2TB 8.5TB
Approximately Approximately
4.2TB 8.5TB
P3AM-7722-25ENZ0