User manual

SAS to SAS/SATA II JBOD Subsystem
12
User Manual
NOTE: Each PSFM has one Power Supply and one Fan. PSFM 1 has
Power#1 and Fan#1, and PSFM 2 has Power#2 and Fan#2. When
the Power Supply of a PSFM fails, the PSFM need not be removed
from the slot if replacement is not yet available. The fan will still
work and provide necessary airflow inside the enclosure.
In replacing the failed PSFM, refer to section 3.2.2 of this manual.
NOTE: After replacing the Power Supply Fan Module and turning
on the Power On/Off Switch of the PSFM, the Power Supply will
not power on immediately. The Fans in the PSFM will spin-up until
the RPM becomes stable. When Fan RPM is already stable, the
RAID controller will then power on the Power Supply. This
process takes more or less 30 seconds. This safety measure helps
prevent possible Power Supply overheating when the Fans cannot
work.