Specifications

Chapter 5. Planning 147
N+1 redundancy
Table 5-8 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 400 W, 500 W, and 600 W per compute node. If there is a loss of one
power supply, all compute nodes in the chassis must throttle the power to the
average power indicated in the Fault column.
Table 5-8 Minimum number of N+1 power supplies required to support half-wide compute nodes
6 6 962 W 6 962 W 6 962 W
5 4 670 W 6 1154 W 6 1154 W
4 4 874 W 4 874 W 6 1400 W
3 4 1000 W 4 1166 W 4 1166 W
2 2 610 W 4 1200 W 4 1400 W
1 2 1000 W 2 1200 W 2 1222 W
a. Theoretical number. Might require unrealistic throttle levels.
b. If there is a power fault, all compute nodes in the chassis must throttle the power to the average power
indicated in the Fault column.
Number of
full-wide
compute
nodes
1000 W ITE 1200 W ITE 1400 W ITE
Number of
power supplies
a
Fault
b
Number of
power supplies
a
Fault
b
Number of
power supplies
a
Fault
b
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 4 418 W 4 418 W 5 594 W
13 4 450 W 4 450 W 5 640 W
12 4 488 W 4 488 W 4 488 W
11 4 500 W 4 532 W 4 532 W
10 3 339 W 4 585 W 4 585 W
9 3 385 W 3 385 W 4 658 W
8 3 442 W 3 442 W 3 442 W
7 3 500 W 3 505 W 3 505 W
6 2 500 W 3 589 W 3 589 W