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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 3
Power demands per component
Module or fan units
Power demand at idle -
blades enabled, no
optics, ports disabled
(Watts)
Management module 46
Switch fabric module
120
48x1G line card
245
48x10G line card
245
12x40G line card
247
Fan unit
25
CAUTION
For the NEBS-compliant installation of a Brocade VDX 8770-8 with AC or DC systems, use a ground wire
of at least 2 AWG. The ground wire should have an agency-approved crimped connector (provided with
the device) attached to one end, with the other end attached to building ground. The connector must be
crimped with the proper tool, allowing it to be connected to both ground screws on the enclosure. Before
crimping the ground wire into the provided ground lug, ensure that the bare copper wire has been
cleaned and antioxidant is applied to the bare wire.
Environmental requirements
DANGER
Do not install the router in an environment where the operating ambient temperature might
exceed 40°C (104°F).
Table 4
lists the environmental operating ranges for the Brocade VDX 8770-8. The requirements for non-operating
conditions are also provided for acceptable storage and transportation environments.
TABLE 4
Environmental requirements
Condition
Acceptable range during operation
°
Ambient temperature
0
to 40
switch
Humidity
5% to 90% RH noncondensing, at 40° C
(104
per hour
Altitude
0 to 3 km (10,000 ft.) above sea level
12 of 34
Nominal power demand -
blades enabled, optics, 50%
line rate, random packets
(Watts)
46
120
310
310
290
25
°
°
°
C (32
to 104
F) outside
°
F), with maximum gradient of 10%
Maximum power demand - blades
enabled, optics, traffic present, full line
rate, 64 byte smallest packet, 40°C
ambient temp., maximum power for all
supported optics (Watts)
50
132
460
460
440
268
Acceptable range during non-operation
°
°
°
°
-25
to +70
C (-13
to 158
switch
10% to 90% RH noncondensing, at 70
°
(158
F)
0 to 12 km (40,000 ft.) above sea level
Brocade VDX 8770-8 QuickStart Guide
F) outside
°
C
Publication Number: 53-1002555-01
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