CONFIGURATION GUIDE
–
NEC Express5800/A2040c, A2020c, A2010c, A1040c
NEC Corporation
Rev.2.0
–Sep. 2015
42
7 Other Add-in Components
7.1 Power Supply Unit
7.1.1 Number of Power Supply Unit
See the table below for the required number of Power Supply Unit per voltage/configuration/redundancy.
Voltage
Model
Power Supply
Unit
# of
CPU
Number of Power Supply Unit
No-redundancy
N+1
2N
200V
A2040c
1000W
2/3/4
2
3
4
800W
2
2
3
4
3/4
3
4
Not available
A2020c
1000W
2
2
3
4
800W
2
3
4
Not available
A2010c
1000W
1
2
3
4
800W
1
2
3
4
A1040c
1000W
1
1
2
2
2/3/4
2
3
4
800W
1/2
2
3
4
3/4
3
4
Not available
100V
A2040c
1000W
2/3
2
3
4
4
3
4
Not available
800W
2
2
3
4
3/4
3
4
Not available
A2020c
1000W
2
3
4
Not available
800W
2
3
4
Not available
A2010c
1000W
1
2
3
4
800W
1
2
3
4
A1040c
1000W
1
1
2
2
2/3
2
3
4
4
3
4
Not available
800W
1/2
2
3
4
3/4
3
4
Not available
NOTE:
When selecting Power Supply Unit, recommend to consider potential add-on of the optional products in
the future.
Redundancy can be selectable; no-redundancy, N+1 and 2N:
・
N+1: When one Power Supply Unit fails, the operation can continue.
・
2N: Configuring 2 power supply groups, each consisting of 1 or 2 power supply unit. When one
group fails, the operation can continue with another group. In this case, power supply is redundant
between PSU#1 and PSU#2, or PSU#3 and #4. Please configure power supply path appropriately.
Hot-plug supported. Can replace Power Supply Unit without stopping the system (under redundant
configuration securing enough power during replacement).
