Replacing A Blank Drive Carrier; Replacing An Iom - Dell EMC ME4 Series Owner's Manual

Figure 52. Installing a SFF drive carrier module (2 of 2)
4 Using the management interfaces (the ME Storage Manager or CLI), verify the following:
• the health of the new disk is OK
• the green Disk Activity LED is on/blinking
• Ops panel states show no amber module faults

Replacing a blank drive carrier

A blank drive carrier module is removed from the enclosure by pulling the module out of the drive slot. A blank drive carrier module is
installed in the enclosure by properly aligning it and inserting it into the drive slot, followed by pushing it securely into place.
CAUTION: To ensure optimal cooling throughout the enclosure, blank drive carrier modules must be fitted to all unused drive
slots in 2U enclosures.

Replacing an IOM

NOTE: Whereas the 2U enclosures support single or dual-IOM configuration, the 5U84 enclosures support dual-controller
configuration only. If a partner controller fails, the storage system will fail over and run on a single controller module until the
redundancy is restored. For 5U84 enclosures, an IOM must be installed in each IOM slot. For 2U enclosures, an IOM must be
installed in IOM-slot A, and either an IOM or IOM-blank must be installed in IOM-slot B to ensure sufficient air flow through the
enclosure during operation.
I/O module (IOM) denotes either a controller module or an expansion module. In a dual-controller configuration, controller and expansion
modules are hot-swappable, which means you can replace one module without halting I/O to disk groups, or powering off the enclosure. In
this case, the second module takes over operation of the storage system until you install the new module.
You might need to replace a controller module or an expansion module when:
• The Fault LED is illuminated
• Health status reporting in the ME Storage Managerindicates a problem with the module
• Events in theME Storage Manager indicate a problem with the module
• Troubleshooting indicates a problem with the module
The illustrations show IOM module replacement within the top slot (A) as you view the enclosure rear panel. To replace an IOM in the
bottom slot (B), you would first rotate the module 180º about its longitudinal axis, so that it properly aligns with its connectors on the back
of the midplane. See Figure 10. 2U controller enclosure—rear panel components (4-port FC/iSCSI)
Module removal and replacement 65