Power Supply Fan Module (Psfm); Psfm Panel - Proware EP-3163J/JD-SCSC User Manual

1.5 Power Supply Fan Module (PSFM)

The JBOD subsystem contains two 500W Power Supply / Fan Modules. All
PSFMs are inserted into the rear of the chassis.

1.5.1 PSFM Panel

The panel of the Power Supply/Fan Module contains: the Power On/Off Switch,
the AC Inlet Plug, and a Power On/Fail Indicator showing the Power Status LED,
indicating ready or fail.
Each fan within a PSFM is powered independently of the power supply within
the same PSFM. So if the power supply of a PSFM fails, the fan associated with
that PSFM will continue to operate and cool the enclosure.
SAS to SAS/SATA JBOD Subsystem
User Manual 9