HP A6616 Installation Manual page 11

Take 650 W power modules for example. If a device requires an actual operation power of 1000
W, you need to install two 650 W power modules to ensure normal working of the device.
Optionally, you can install altogether three such power modules with one of them for power
redundancy or four such power modules with two of them for power redundancy.
Power management
The A6616 supports power management. This function prevents a single faulty power module
from affecting the whole router, and hence ensures the normal operation of services.
To be more specific, after the MPU starts up, the online FIPs are powered on in descending
order of their priorities. FIPs with the same priority are powered on in ascending order of their
slot numbers. This process goes on until the system power is insufficient or all the FIPs are
powered on.
For example, on an A6616, suppose that the system power is sufficient. If FIP-200s are inserted
into Slot 1, Slot 3, Slot 7, and Slot 9 with power-on priorities Level 2, Level 3, Level 2, and Level
1 respectively, the FIP-200s are powered on in the order of Slot 9, Slot 1, Slot 7, and Slot 3.
Use the display power-supply command or the display power-supply verbose command to
view the power management information. You can manually power on or power off the FIPs as
needed, in order to adjust the available system power. Use the undo remove slot slot-number
command to power on the FIP in the specified slot. Use the remove slot slot-number command
to power off the FIP forcibly.
Do not power off a running power module. Otherwise, the power supply may be insufficient, and
a system power failure or FIP power failure may occur.
For details about commands in intelligent power supply management, refer to Device
Management in the System Volume of HP SR6600 Routers User Manual.
Fan Tray
Table 1-5 Fan tray specifications
Number of fans
Fay tray dimensions (H × W × D)
Weight
Failsafe
Hot swappable
Table 1-6 Description of fan tray LEDs
LED
RUN (green)
ALM (red)
Fan tray
Status
Off
On
Off
On
Specification
9 (supporting automatic fan speed adjustment)
78.1 × 410.2 × 447.8 mm (3.07 × 16.15 × 17.63 in.)
5 kg (11.02 lb)
Supported
Supported
Meaning
The system is powered off or the fan tray is faulty.
The fan tray is working normally.
The fan tray is working normally.
The fan tray is faulty.