Users Guide

Table Of Contents
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.
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.
Managing Chassis Storage
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