Chapter 5: Subsystem Maintenance and Upgrading
the PSU into chassis, and when you feel the contact
resistance, use slightly more force to engage the back-
end connectors.
Step 6.
Secure the PSU to the subsystem
. If you use S12E-
R1132-4, push the handle downwards when the PSU is
fully inserted. If you use S12E-G1133-2, pull the handle
upwards.
Step 7.
Fasten the retention screw
through the PSU extraction
handle.
Step 8.
Replace the power cord
that connects the PSU to the
main power source.
Step 9.
Power on the PSU
by flipping its power switch.
Step 10.
Check LEDs to ensure the replacement PSU is
working properly.
The LED should light constant green
when the PSU is powered on.
5.6. Cooling
Module
Maintenance
5.6.1
Notes on Cooling Module Maintenance
․
Redundant cooling modules
: S12E-R1132-4 is equipped with
four (4) cooling fans, two (2) within each cooling module, while
S12E-G1133-2 is equipped with three (3) cooling fans, one (1)
within each cooling module. These cooling modules control the
operating temperature within the chassis; therefore their working
integrity should be maintained at all times.
Although the cooling modules are fully redundant, it is not
advisable to run the EonStor subsystem with fan(s) in a single
module for an extended period of time. If the cooling fans in the
only remaining module fail, the subsystem will quickly overheat.
Detecting a failed cooling module:
If a cooling module fails,
the LEDs located at the back of the PSU module, an audible
alarm, the firmware, and the SANWatch manager software can
notify you.
Replacing a cooling module:
Once you are notified that a
cooling module has failed, it should be replaced as soon as
possible. A failed cooling module should only be removed from
the subsystem when you have a replacement module
immediately available.
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