Owners Manual
Table Of Contents
- Dell EMC PowerVault ME4 Series Storage System Owner’s Manual
- Contents
- Storage system hardware
- Troubleshooting and problem solving
- Module removal and replacement
- ESD precautions
- Dealing with hardware faults
- Firmware updates
- Continuous operation during replacement
- Shutting down attached hosts
- Shutting down a controller module
- Verifying component failure
- Customer-replaceable units (CRUs)
- Attach or remove the front bezel of a 2U enclosure
- Replacing a drive carrier module in a 2U enclosure
- Replacing a DDIC in a 5U enclosure
- Replacing a controller module or IOM in a 2U or 5U enclosure
- Replacing a power supply unit (PSU) in a 5U enclosure
- Replacing a fan cooling module (FCM) in a 5U enclosure
- Replacing a power cooling module (PCM) in a 2U enclosure
- Completing the component installation process
- Verifying component operation
- Performing updates in PowerVault Manager after replacing an FC or SAS HBA
- Events and event messages
- Connecting to the CLI port using a serial cable
- Technical specifications
- Standards and regulations
● Use the PowerVault Manager
● Use the CLI
● Monitor event notification
● View the enclosure LEDs
Use the PowerVault Manager
The PowerVault Manager uses health icons to show OK, Degraded, Fault, or Unknown status for the system and its
components. The PowerVault Manager enables you to monitor the health of the system and its components. If any component
has a problem, the system health will be Degraded, Fault, or Unknown. Use the web application’s GUI to drill down to find each
component that has a problem, and follow actions in the Recommendation field for the component to resolve the problem.
Use the CLI
As an alternative to using the PowerVault Manager, you can run the show system CLI command 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,
and those components will be listed as Unhealthy Components. Follow the recommended actions in the component Health
Recommendation 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 directs you to check whether an event has been logged, or to view information about an event
in the log, you can do so using the PowerVault Manager or the CLI. Using the PowerVault Manager, you can view the event
log and then click 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.
View the enclosure LEDs
You can view the LEDs on the hardware (while referring to LED descriptions for your enclosure model) to identify component
status. If a problem prevents access to the PowerVault Manager or the CLI, this is the only option available. However,
monitoring and management are often done at a management console using storage management interfaces, rather than relying
on line-of-sight to LEDs of racked hardware components.
Performing basic steps
You can use any of the available options described in performing the basic steps comprising the fault isolation methodology.
Gather fault information
When a fault occurs, it is important to gather as much information as possible. Doing so will help you determine the correct
action needed to remedy the fault.
Begin by reviewing the reported fault:
● Is the fault related to an internal data path or an external data path?
● Is the fault related to a hardware component such as a disk drive module, controller module, or power supply unit?
By isolating the fault to one of the components within the storage system, you will be able to determine the necessary
corrective action more quickly.
Determine where the fault is occurring
When a fault occurs, the Module Fault LED—located on the Ops panel on an enclosure’s left ear—illuminates. Check the LEDs
on the back of the enclosure to narrow the fault to a CRU, connection, or both. The LEDs also help you identify the location of a
CRU reporting a fault.
Troubleshooting and problem solving
31