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Chassis Management Controller Version 2.0 for Dell PowerEdge VRTX User's Guide

Shared PERC Controllers

For VRTX systems shipped with two PERC controllers, the second PERCs may have been disabled. In this mode the chassis does not operate in Fault Tolerant mode. The system then operates as a single Shared PERC system with only one active controller operating in Performance mode.

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.1-1and RAID.ChassisIntegrated.2-1, your system has two Shared PERC controllers.

For systems with two Shared PERC installed, you can change the operation mode from Performance mode to Fault Tolerant mode, or contrariwise using the Web Interface or the RACADM CLI.

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 select Fault Tolerant Shared PERC mode.
  • Run the racadm raid disableperc:RAID.ChassisIntegrated.2-1 command to select Performance 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.

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