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Dell Chassis Management Controller Version 3.10 for Dell EMC PowerEdge VRTX User's Guide

Shared PERC Controllers

For systems with two integrated Shared PERC installed, you can change the operation mode from Fault Tolerant mode to Non Fault Tolerant mode, or contrariwise using the Web Interface or the RACADM CLI by enabling or disabling the second internal shared PERC 8 controller.

For internal shared PERC8 controller, you can disable the second integrated controller. After the second integrated controller is disabled the First integrated controller is not in fault-tolerant mode. When the second integrated controller is enabled, the two integrated controllers are in fault-tolerant mode, by default. The second integrated controller can be disabled by using racadm raid disableperc:RAID.ChassisIntegrated.2-1 command.

For external enclosures, both the External Shared PERC 8 card in slot 5 and slot 6 can be disabled using racadm raid disableperc: RAID.ChassisSlot.5-1 and racadm raid disableperc: RAID.ChassisSlot.6-1 command respectively.

From the RACADM Command Line Interface, run the racadm raid get controllers command to list the number of Shared PERC controllers on your system. If the command lists only RAID.ChassisIntegrated.1-1, your system has a single Shared PERC controller. If the command lists RAID.ChassisIntegrated.1-1, RAID.ChassisIntegrated.2-1 your system has two Shared PERC controllers.

Second Integrated Shared PERC 8 and External Shared PERC 8 cards in slot 5 and slot 6 can be enabled or disabled.

To change the operation mode using the CMC Web Interface, go to the Controllers Troubleshooting page by navigating to Chassis Overview > Storage Controllers , in the left pane and select the Disable Raid Controller or Enable Raid Controller option.

To change the operational mode using the RACADM CLI:
  • Run the racadm raid enableperc:RAID.ChassisIntegrated.2-1 command to enable the Integrated 2 shared PERC 8 and Fault Tolerant mode, if second integrated shared PERC8 is disabled.
  • Run the racadm raid enableperc:RAID.ChassisSlot.6-1 command to enable external Shared PERC8 in slot 6.
  • Run the racadm raid disableperc:RAID.ChassisIntegrated.2-1 command to disable Second Integrated shared PERC8 and Fault Tolerant mode.
  • NOTE:
    • The chassis must be turned on and all server modules must be turned off before you run the enable or disable commands. The chassis is automatically power cycled as part of this operation. After changing the Shared PERC operation mode, it is recommended to reset the CMC using the Troubleshooting page or the racadm racreset command.
    • By default if second integrated PERC 8 cards are detected, then the mode displays high availability mode.
    • Enabling the SPERC in external slots do not enable fault tolerance.
    • To enable Fault Tolerant mode for external shared PERC8, refer Enable or Disable Fault Tolerance of External RAID controller using RACADM section.

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