Brocade Communications Systems MLX Series Hardware Installation Manual page 51

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Power supply interoperability
For Brocade MLX Series and NetIron XMR 32-slot devices, you can mix 2400W and 3000W power
supply units.
For Brocade MLX and NetIron XMR devices, only the 8-slot and 16-slot router power supplies are
interchangeable. The 4-slot and 32-slot power supplies cannot be used in 8-slot or 16-slot Brocade
MLX or NetIron XMR devices.
For power supply specifications, refer to
Power supplies are installed in slots along the bottom of 8-slot, 16-slot, and 32-slot routers. Power
supplies are installed in slots in the rear of 4-slot routers.
Power supplies provide power to all router components, share the workload equally, and report
status to the management module. If the management module detects that a power supply has
failed or overheated, the management module redistributes the workload of the failed power
supply to the remaining power supplies.
Power supplies generally have three LEDs on the faceplate that provide status for input power,
output power, and notification of alarms. If the input power and output power LEDs are on (steady
green), the power supply is providing power to the router components. For more information about
power supply LEDs, refer to the AC and DC power supply sections in
NOTE
After a power supply is removed from a router, the software determines if there is enough power to
operate all of the interface modules. If there is not enough power, some interface modules will be
powered off.
NOTE
If you want to perform a hitless upgrade, replace one power supply unit at a time, and make sure
the device has at least +1 redundancy at all times.
DANGER
Power supplies are hot-swappable, which means they can be removed and replaced while the
router is powered on and running. However, Brocade recommends that you disconnect a power
supply from the power source before removing and replacing the supply. The 4-, 8-, and 16-slot
router can be running while a power supply is being removed and replaced, but the power supply
itself should not be connected to a power source. Otherwise, you could be injured, or the power
Brocade MLX Series and NetIron XMR Hardware Installation Guide
53-1003821-01
32-slot router: Supports 2100W AC, 2400W AC and DC, and 3000W AC and DC models.
Accommodates eight power supplies.The following redundancy configurations apply:
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If you are using 2100W AC power supplies, five are required and three are redundant
(200-240 volts AC only).
-
If you are using 2400W AC or 2400W DC power supplies, four are required and four are
redundant (200-240 volts AC only).
-
If you are using 2100W and 2400W power supplies (AC or DC) in combination, five are
required and three are redundant.
-
If you are using 3000W AC or DC power supplies, four are required and four are redundant.
Because power is supplied over a common power bus, any power supply installed in addition to
required power supplies provides backup for any power supply that fails.
"Power specifications" on page 293.
Router modules
Table 24 on page 124.
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