Performing Updates In Mesm After Replacing An Fc Or Sas Hba; Using Management Interfaces; Verify Rear Panel Leds; Removing A 2U Storage Enclosure Chassis From The Rack - Dell EMC ME4 Series Owner's Manual

Verify rear panel LEDs

Rear panel LEDs are located on PCM and IOM face plates.
• Verify that each power cooling module's PCM OK LED is illuminated green.
• For IOMs, verify that the OK LED is illuminated green, indicating that the module has completed initializing, and is online.

Using management interfaces

In addition to viewing LEDs as previously described, you can use management interfaces to monitor the health status of the system and its
components, provided you have configured and provisioned the system, and enabled event notification.
Select from the following methods to verify component operation:
• Use the ME Storage Manager to check the health icons/values of the system and its components, or to drill down to a problem
component. The ME Storage Manager uses health icons to show OK, Degraded, Fault, or Unknown status for the system and its
components. If you discover a problem component, follow the actions in its Recommendation field to resolve the problem.
• As an alternative to using the ME Storage Manager, you can run the show system command in the CLI to view the health of the
system and its components. If any component has a problem, the system health will be Degraded, Fault, or Unknown. If you
discover a problem component, follow the actions in its Health Recommendations field to resolve the problem.
• Monitor event notification — With event notification configured and enabled, you can view event logs to monitor the health of the
system and its components. If a message recommends that you check whether an event has been logged, or to view information about
an event in the log, you can do so using the ME Storage Manager or the CLI. Using the ME Storage Manager, view the event log and
then hover over the event message to see detail about that event. Using the CLI, run the show events detail command with
additional parameters to filter the output to see the detail for an event. See the CLI Reference Guide for more information about
command parameters and syntax.
Performing updates in MESM after replacing an FC or
SAS HBA
After replacing an FC or SAS HBA in an attached host, perform the following tasks:
1 For an FC HBA, update the zoning if a switch is used, then update the host/initiator grouping in MESM.
2 For a SAS HBA, update the host/initiator grouping in MESM.
For details about managing hosts and host groups in MESM, see the Administrator's Guide.
Removing a 2U storage enclosure chassis from the
rack
This section provides the procedure for removing a faulty storage enclosure chassis from its rack location.
CAUTION: It is recommended that all disk drive modules be removed before removing the enclosure. Two people are required to
move the 2U enclosure.
1 Disconnect the power cables and data cables between devices as needed:
a Between the cascaded enclosures.
b Between the controller and peripheral SAN devices.
c Between the controller and the host.
NOTE: Label the cables to facilitate reconnection of the storage devices.
2 Remove the retaining screws that secure the front and rear of the chassis to the rack and rails.
78 Module removal and replacement