Owners Manual
• Unplug the expansion enclosure chassis before you move it or if you think it has become damaged in any way. When powered by
multiple AC sources, disconnect all power sources for complete isolation.
Electrostatic Discharge Precautions
Always follow electrostatic discharge (ESD) precautions to avoid injury and damage to Storage Center equipment.
Electrostatic discharge (ESD) is generated by two objects with dierent electrical charges coming into contact with each other. The
resulting electrical discharge can damage electronic components and printed circuit boards. Follow these guidelines to protect your
equipment from ESD:
• Dell recommends that you always use a static mat and static strap while working on components in the interior of the expansion
enclosure chassis.
• Observe all conventional ESD precautions when handling plug-in modules and components.
• Use a suitable ESD wrist or ankle strap.
• Avoid contact with backplane components and module connectors.
• Keep all components and printed circuit boards (PCBs) in their antistatic bags until ready for use.
General Safety Precautions
Always follow general safety precautions to avoid injury and damage to Storage Center equipment.
• Keep the area around the expansion enclosure chassis clean and free of clutter.
• Place any system components that have been removed away from the expansion enclosure chassis or on a table so that they are
not in the way of other people.
• While working on the expansion enclosure chassis, do not wear loose clothing such as neckties and unbuttoned shirt sleeves.
These items can come into contact with electrical circuits or be pulled into a cooling fan.
• Remove any jewelry or metal objects from your body. These items are excellent metal conductors that can create short circuits
and harm you if they come into contact with printed circuit boards or areas where power is present.
• Do not lift the expansion enclosure chassis by the handles of the power supply units (PSUs). They are not designed to hold the
weight of the entire chassis, and the chassis cover could become bent.
• Before moving the expansion enclosure chassis, remove the PSUs to minimize weight.
• Do not remove drives until you are ready to replace them.
NOTE: To ensure proper expansion enclosure cooling, hard drive blanks must be installed in any hard drive slot that is not
occupied.
Pre-Replacement Procedures
Perform the procedures described in this chapter before replacing a component of the SC400 series expansion enclosure.
Send Diagnostic Data Using Dell SupportAssist
After replacing components, use Dell SupportAssist to send diagnostic data to Dell Technical Support Services.
1. Use Dell Storage Client to connect to the Storage Center.
2. In the Summary tab, click Send SupportAssist Information Now, which is located under SupportAssist Actions in the Status
pane.
The Send SupportAssist Information Now dialog box opens.
3. Select Storage Center Conguration and Detailed Logs.
4. Click OK.
Replacing the Front Bezel
The front bezel is a cover for the front panel of the expansion enclosure.
About this task
The front bezel must be removed from the front panel when replacing hard drives.
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Replacing SC400 Series Expansion Enclosure Components