Specifications

Chapter 5. Planning 145
The power capping options can be set as shown in Figure 5-12.
Figure 5-12 Setting power capping in the Chassis Management Module
5.6.6 Chassis power requirements
It is expected that the initial configuration (based on the IBM PureFlex System
configuration that is ordered), plus any additional nodes, contains the necessary
number of power supplies.
You need to know the number of power supplies needed to support the number
of Power Systems compute nodes in the IBM Flex System Enterprise Chassis
when adding a Power Systems compute node to an existing chassis. In addition,
you must know the relationship between the number of Power Systems compute
nodes and the number of power supplies in the chassis.
N+N redundancy
Table 5-6 lists the minimum number of power supplies required in a chassis to
support the designated number of compute nodes, assuming average half-wide
powers of 500 W, 600 W, and 700 W per compute node with a throttling policy
enabled. If there is a a power fault, all compute nodes in the chassis must throttle
the power to the average power indicated in the Fault column.
Table 5-6 Minimum number of N+N power supplies required to support half-wide compute nodes
Number of
half-wide
compute
nodes
500 W ITE 600 W ITE 700 W ITE
Number of
power supplies
a
Fault
b
Number of
power supplies
a
Fault
b
Number of
power supplies
a
Fault
b
14 6 412 W 6 412 W Not supported