Troubleshooting Network Problems; Troubleshooting Controller; Hotplugging Enclosures In Fault-Tolerant Chassis - Dell EMC PowerEdge VRTX User Manual

Troubleshooting Network Problems

The integrated CMC trace log allows you to debug CMC alerts and networking. You can access the trace log using the CMC Web
interface or RACADM. See the gettracelog command section in the Chassis Management Controller for PowerEdge VRTX
RACADM Command Line Reference Guide.
The trace log tracks the following information:
• DHCP — Traces packets sent to and received from a DHCP server.
• DDNS — Traces dynamic DNS update requests and responses.
• Configuration changes to the network interfaces.
The trace log may also contain CMC firmware-specific error codes that are related to the integrated CMC firmware, not the
managed system's operating system.

Troubleshooting Controller

To troubleshoot a controller:
1. In the left pane, click Chassis Overview → Storage → Controllers → Troubleshooting.
2. On the Controller Troubleshooting page, from the Actions drop-down list for the respective controller, select any one of the
following, and then click Apply.
• Reset Configuration — Deletes the virtual disks and hot spares. However, the data on the disks is not erased.
NOTE: Resetting PERC configuration discards the pinned cache, if any, on the PERC controller.
• Export TTY Log — The TTY debug log from the storage controller is exported to your local system.
• Discard Pinned Cache — Deletes data that is stored in RAID controller cache.
NOTE: If there is pinned cache, the option to clear it is present. If there is no pinned cache, this option is not
displayed.
• Disable RAID Controller — Disables the peer controller. This option is available in the drop-down menu only for the Shared
PERC8 (Integrated 2) and external Shared PERC8s.
• Enable RAID Controller — Enables the peer controller. Enable Raid Controller option is available in the drop-down menu.
NOTE:
For a disabled PERC, none of the other options Reset Configuration, Export TTY Log, Discard Pinned Cache, and Disable
RAID Controller are available in the drop-down menu.
• Enable Fault Tolerance — Enables the fault-tolerance mode of the External shared PERC 8 card.
• Disable Fault Tolerance — Disables the fault-tolerance mode of the External shared PERC 8 card.
NOTE: Enable Fault Tolerance and Disable Fault Tolerance are displayed only for the External Shared PERC 8
cards. The default mode of the External Shared PERC 8 cards is the non-fault-tolerant mode.
NOTE:
• Displays an error message if the blades are powered ON.
• The command fails if the blade is powered ON.

Hotplugging enclosures in fault-tolerant chassis

1. Make sure that slots 5 and 6 chassis are not fault-tolerant.
2. Disconnect the enclosures.
3. Change the status of slots 5 and 6 to fault-tolerant mode.
4. Reconnect the enclosures in fault-tolerant cabling.
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