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Chapter 9. Power supplies
9.1. Requirements for DE6400 or DE6600 power supply
replacement
Before replacing a power supply in a DE6400 or DE6600 array, review the
following requirements.
• You must have a replacement power supply that is supported for your controller shelf or drive
shelf model.
Do not mix PSUs of different voltage types. Always replace like for like.
• You must have an ESD wristband, or you have taken other antistatic precautions.
9.2. Replace a DE6400 or DE6600 power supply
You can replace a power supply when it fails in your DE6400 or DE6600
controller.
If a power supply fails, you must replace it as soon as possible so the controller shelf has a
redundant power source.
Before you begin
• Review the details in the Recovery Guru to confirm that there is an issue with the power supply.
Select Recheck from the Recovery Guru to ensure no other items must be addressed first.
• Check that the amber Attention LED on the power supply is on, indicating that the power
supply or its integrated fan has a fault.
• Make sure you have the following:
◦ A replacement power supply that is supported for your controller shelf.
◦ An ESD wristband, or you have taken other antistatic precautions.
◦ A management station with a browser that can access ThinkSystem System Manager for
the controller. (To open the System Manager interface, point the browser to the controller's
domain name or IP address.)
9.2.1. Step 1: Remove failed power supply
Remove a failed power supply so you can replace it with a new one.
Steps
1. Unpack the new power supply, and set it on a level surface near the drive shelf.
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