Fan Tray - Huawei SE2900 Hardware Description

HUAWEI SE2900 Session Border Controller
Hardware Description

1.4.2 Fan Tray

Functions
Table 1-18
Table 1-18 Fan tray functions
Function
Heat dissipation
Monitoring
Speed adjustment
Hot swap
Appearance
Figure 1-22
Issue 01 (2016-01-15)
describes the functions of the fan tray.
Description
The fan trays draw in cool air from the front of the subrack and
exhaust warm air from the rear of the subrack.
Fan monitoring boards are configured for fan trays to:
 Provide ports for communicating with the switch boards.

Detect and report the fan operating status and speed values.

Control the health indicators on the fan trays.
 Support fan blocking status detection and reports fan
alarms.

Support online software upgrades and log uploads.
 Monitor and report the fan temperature.
 Detect the fan tray installation status.
The fan speed can be automatically or manually adjusted based
on the ambient temperature, implementing fan speed
adjustment for low-power operating.
Online replacement is supported.
shows a fan tray.
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