Calculating The Number Of Power Supplies Required For Your Qfx10016; Configuration; Table 47: Total Power Available - Juniper QFX10016 Hardware Manual

Calculating the Number of Power Supplies Required for Your QFX10016 Configuration
Copyright © 2017, Juniper Networks, Inc.
Add the power consumption from step
3.
step 2.
To continue from the previous example, add the wattage from five QFX10000-36Q
and three QFX10000-30C cards to a redundant configuration.
(9800 W) + (5900 W)
= 15700 W required
Use this procedure to calculate the number of power supplies required by your switch
configuration. The minimum power configuration for QFX10016 switches is three power
supplies. You can optionally configure your switch for N+1 configuration.
To calculate the number of power supplies required for your minimum switch

configuration:

Determine the power available from the power supplies. AC power supplies are 2700 W
1.
and DC power supplies are 2500 W.
for installed power supplies.
NOTE: DC systems are only supported in the redundant configuration.

Table 47: Total Power Available

Number of Power Supplies
3
4
5
6
7
8
9
10 (for redundancy only)
Determine the total power required for your configuration with line cards installed.
2.
The total power available to the chassis is calculated by dividing the wattage needed
by the power rating, then rounding up.
Chapter 9: Power Specifications and Requirements
1 and the total line card consumption from
Table 47 on page 117 shows the power available
AC
8100 W
10800 W
13500 W
16200 W
18900 W
21600 W
24300 W
DC
22500
117