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Dell Chassis Management Controller Version 3.0 for Dell EMC PowerEdge VRTX User's Guide

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Enabling or Disabling RAID Controller Using CMC Web Interface

For a VRTX chassis with two Shared PERC8 controllers, the Integrated 2 PERC adapter can be disabled or enabled when the Integrated 1 PERC adapter is active and all server modules are turned off. Both adapters must be enabled for fault-tolerance. The Controllers Troubleshooting page allows you to enable or disable the peer controller.
NOTE To prevent loss of data, before performing controller enable or disable operations:

  • Complete all data operations such as Rebuild or Copy Back.

  • Make sure that the data volumes are in optimal state.

NOTE While enabling the second PERC adapter, a warning message is displayed and the fault-tolerant status is degraded if:

  • Any of the PERC adapter settings are changed.

  • Firmware is updated.

Make sure that the firmware and the settings of the shared PERC match to set the fault tolerant system configuration to Fault Tolerant mode.
You can disable a peer controller only if:

  • All the servers in the chassis are turned off.

  • The Integrated 1 PERC is currently the active controller.

    NOTE If the Integrated 1 PERC is not currently the active controller, then perform a chassis power cycle to make this the active controller.

  • Both CMCs have the same firmware version that supports this feature.

NOTE After disabling Integrated 2 PERC , to replace a CMC card, it is recommended to update the CMC card with firmware version 1.35 or later, before the card is assigned to be the active CMC controller in the system. A message is displayed before you perform this action.
To enable or disable a peer controller in fault-tolerant mode using the CMC Web interface:
  1. In the left pane, click Chassis Overview > Storage > Controllers > Troubleshooting.
  2. On the Controller Troubleshooting page, from the Actions drop-down menu for Integrated 2 PERC, select one of the following, and then click Apply.
    • Disable RAID Controller — Disables the peer controller in fault-tolerant mode.
    • Enable RAID Controller — Enables the peer controller in fault-tolerant mode. If the Integrated 2 PERC is already disabled, then the Enable Raid Controller option is available in the drop-down menu.
    • To enable or disable External Shared PERC 8 card controllers :
      • On the Controller Troubleshooting page, from the Actions drop-down menu for External Shared PERC 8 card in slot 5 or slot 6, select one of the following, and then click Apply.
        • Disable RAID Controller — Disables the RAID controller.
        • Enable RAID Controller — Enables the RAID controller. If the PERC is already disabled, then Enable Raid Controller option is available in the drop-down menu.
    • Reset Configuration — Select this option to delete virtual drive and unassign all the hot spares attached to the controller. However, this only removes the disks from the configuration and does not delete any data. NOTE: Reset Configuration does not remove any foreign configurations. Use Clear Foreign Configuration to reset.
    • Export TTY Log — Select this option to export the TTY log on the local system. NOTE: The TTY Log collected from the controller does not contain any data from the drives. However, it may contain data such as SAS addresses.
    • Enable Fault Tolerance — Select this option to enable the fault-tolerance mode of the external SPERC. This action also resets the External Shared PERC 8 card.
    • Disable Fault Tolerance — Select this option to disable the fault-tolerance mode of the external SPERC. This action also resets the External Shared PERC 8 card.
      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.
      • By default the two integrated shared storage adapters are detected with high availability mode.
      • You must enable Fault Tolerance mode on the external shared controller after it is cabled.
      • 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 Enabling or disabling a peer controller initiates a chassis power cycle. The changes are reflected only after the power cycle is complete.

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