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
Drive#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.
shows a guideline for the number of drives and user capacities when 1.2TB SAS disks are installed
and
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
Summary of Contents for ETERNUS DX S5 Series
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