EonStor DS S48 Series Hardware Manual
1.2.3
Power Supply Unit (PSU) w/ Built-in Cooling Module & Drawer
Fan Module
There are three PSUs with built-in cooling modules to supply power to the S48 and
cool the system. Each power supply contains the following fans:
PSU
Fan
PSU 0
PSU 1
PSU 2
System fan IDs
0 & 1
2 & 3
4 & 5
PSU 0 PSU 1 PSU 2
For details on replacing a PSU, please go
There is also a drawer fan module at the end of each drawer to regulate airflow and
keep hard drives operating within their norm temperature.
Drawer
Fan
Drawer 1
Drawer 2
Drawer 3
System fan IDs
6, 7, 8, 9
10, 11, 12, 13
14, 15, 16, 17
For details on replacing a fan module, please go to this
1.2.4
Internal Backplane
An integrated backplane separates the front and rear sections of the chassis. This
circuit board provides logic level signals and low voltage power paths. Thermal
sensors and I
2
C devices are embedded to detect system temperatures and
PSU/cooling module operating status. The internal backplane board is not
user-serviceable.
WARNING
DO NOT attempt to access the backplane board as it lead to fatal damage of the
RAID system. Also, physical contact with the backplane may cause electrical
hazards.
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