EonStor DS B12/B24 Series
31
70
PSU & Cooling Module
There are two hot-swappable PSUs and cooling modules. Their components include
a power socket
(1)
, power switch
(2)
, PSU status LED
(3)
, cooling module
(4)
,
cooling module status LED
(5)
, retention screw
(6)
and an extraction handle
(7)
.
3
3
6
1
2
7
3
7
6
2
1
1U single controller system PSU
1U dual controller system PSU
2U system PSU
The cooling modules can operate at three rotation speed settings. Under normal
operating conditions, the cooling fans run at the low speed. Under the following
conditions, cooling fans raise their rotation speed to increase the airflow:
Component failure: cooling module, PSU, or a temperature sensor fails.
Elevated temperature: temperature breaches the upper threshold set for
any of the interior temperature sensors.
During the system initialization stage, the cooling fans operate at high
speed and return to low speed once the initialization process is
completed and no erroneous condition is detected.
NOTE
There are two upper temperature thresholds: one for event notification and the other
for triggering higher fan rotation speed. The preset value for event notification can be
changed using the firmware-embedded configuration utility, while the fan speed
trigger cannot be changed. Refer to the Firmware Operation Manual for details.