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Figure 73. Installing a LFF drive carrier module (2 of 2)

5. Verify that the Amber Fault LED on the disk module handle is off. Verify that the front panel LED states

show no amber module faults. The enclosure front panel Drive Activity LED will blink Green to show

disk activity.

Replacing an IOM/EBOD expander module

Important: If the Model 106 enclosure is congured with a single expansion module, it must be installed

in IOM/EBOD expander module slot No.0. As you face the enclosure rear panel, this is the IOM/EBOD

expander module slot located on the right. An IOM/EBOD expander module blank must be installed in the

adjacent slot (No.1) as shown in Figure 5 on page 10. This conguration is required to ensure sufcient air

flow through the enclosure during operation.

Model 106 only supports dual-IOM/EBOD expander module conguration. The I/O modules are hot-

swappable, which means you can replace one module without halting I/O to declustered array or

powering off the enclosure. In this case, the second module provides paths to the drives until you install

the new module.

You may need to replace an expansion module when:

• The Fault LED is illuminated

• Logs or events in the rmware indicate a problem with the module

• Troubleshooting indicates a problem with the module

Before you begin

Removing an I/O module from an operational enclosure signicantly changes air flow within the

enclosure.

Openings must be populated for the enclosure to cool properly. Leave modules in the enclosure until

ready to install a replacement. If replacing both IOMs/EBOD expander modules in a dual-canister

enclosure, record conguration settings before installing the new controller modules. See “Removing an

IOM/EBOD expander module” on page 79, and “Installing an IOM/EBOD expander module” on page 80

for instructions about installing an additional controller module.

Verifying component failure

• Check Module Fault LED – rear (front of enclosure): Amber= Fault condition.

• Check Fault LED (back of enclosure on IOM/EBOD expander module faceplate): Amber = Fault

condition.

IBM ESS expansion: Hardware Installation and Maintenance Guide - Model 106

IBM 106 User Manual

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