Chapter 5: Subsystem Maintenance
Replacing a Failed PSU Module
5-9
transferred from the old controller module to the replacement. Instructions for replacing
a controller module have been given in
Section 5.3.3
above.
5.4. Replacing a Failed PSU Module
5.4.1 Notes on PSU Module Maintenance
♦
Two redundant PSU modules
- The ES comes with two fully redundant, hot-
swappable PSU modules. These modules are located at the rear of the subsystem.
♦
Immediate Replacement
- When a PSU fails it should ideally be replaced
immediately. Do not remove the PSU module unless a replacement is readily
available. Removing a PSU without a replacement will cause severe disruptions to
the internal airflow and the subsystem will over heat possibly causing irreparable
damage to some of the subsystem components.
WARNING:
Although the PSU modules are fully redundant, it is not advisable to run the
EonStor subsystem with a single PSU module for a long period of time. If the
second PSU module fails the sub-system will be shut down..
5.4.2 Replacing the PSU Module
To replace a PSU please follow these steps:
1.
Turn off the PSU
. The power switch is located at the top of the rear panel, directly
above the PSU module. (See
Figure 5-4
)
2.
Once the power switch has been turned off,
remove the power cable
that connects
the ES U16U subsystem to the mains. The power cable socket is found on the left-
hand side.
3.
After the power cable has been removed from the socket,
remove the retention
screw
that is found on the right hand side of the PSU. (See
Figure 5-4
.)
