Brocade Communications Systems VDX 8770-8, Hardware Reference Manual, Page: 32 / 40

14 Brocade VDX 8770-8 Hardware Reference Manual
53-1002564-01
Preparing for the Brocade VDX 8770-8 installation
2
The power requirements for a given chassis configuration depend on which modules have been
installed in the chassis.
Table 4 shows the power consumption for the modules that can be used in
the Brocade VDX 8770-8 chassis along with the power consumption for the cooling fans.
All numbers for the line cards assume that the card is fully populated with optical transceivers,
including QSFPs for the 12x40G line cards. All ports are Ethernet.
You can calculate your power requirements by combining the power demands for the various
modules and fan units in your configuration. While you may use fewer ports in a given line card, it is
always safer to use the power requirement of a fully populated card.
Table 5 illustrates the power consuption for a fully configured chassis at idle, nominal, and
maximum power demands.
TABLE 4
Power demands per component
Module or fan units Power demand at
idle - blades
enabled, no optics,
ports disabled
(Watts) Nominal power demand
- blades enabled,
optics, 50% line rate,
random packets (Watts) Maximum power demand - blades
enabled, optics, traffic present,
full line rate, 64 byte smallest
packet, 40C ambient temp.,
maximum power for all supported
optics (Watts) Ports per module Number of modules
permitted in chassis
Management
module 46 46 50 NA 2
Switch fabric
module 120 120 132 NA 6
48x1G line card 245??? 310??? 460??? 48 1 Gbps up to 8
48x10G line card 245 310 460 48 10 Gbps up to 8
12x40G line card 247 290 440 12 40 Gbps up to 8
Fan unit 25 25 268 NA 4
TABLE 5 Power demands for fully configured Brocade VDX 8770-8 chassis
Module or fan units Power demand at idle -
blades enabled, no
optics, ports disabled
(Watts) Nominal power demand -
blades enabled, optics, 50%
line rate, random packets
(Watts) Maximum power demand - blades
enabled, optics, traffic present, full line
rate, 64 byte smallest packet, 40C
ambient temp., maximum power for all
supported optics (Watts)
2 management
modules 92 92 100
6 switch fabric
modules 720 720 792
8 48x10G line cards 1960 2480 3680
no 12x40G line cards 0 0 0
4 fan units 100 100 1072
Total DC power
demand 2872 3392 5644