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Chapter 5: System Maintenance
Step 4. Once the new BBU module is correctly installed into the subsystem,
the LED should start flashing, indicates the BBU is being charged.
When the BBU is fully charged, the LED will go off.
5.5 Replacing a Failed PSU Module
5.5.1 Notes on PSU Module Maintenance
• Two redundant PSU modules: The subsystem comes with two 350W, fully
redundant, hot-swappable PSU modules. These modules are accessed from 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 overheat, possibly causing
irreparable damage to some of the subsystem components.
• PSU bracket: Each PSU module is permanently mounted in a two-level steel
bracket, creating a single unit. The PSU is located in the upper level and a
removable cooling fan module is mounted in the lower level.
WARNING!
Although the subsystems can operate using single PSU module, it is not advisable
to run the EonStor subsystems with a single PSU module for an extended period
of time.
5.5.2 Replacing the PSU Module
To replace a PSU, please follow these steps:
Step 1. Turn off the PSU and remove the power cord: Turn of the power
switches located on the right side of each power supply module. See
the diagram below.
Step 2. Once the power switches have been turned off, remove the power
cables that connect the subsystem to the main power. The power
connector is found on the left side of each power supply module.
Replacing a Failed PSU Module
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