Users Guide

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 Actionsdrop-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. This option is
available in the drop-down menu only for the Integrated 2 PERC when it is not disabled.
• 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.
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.
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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