Users Guide

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 rmware and the settings of the shared PERC match to set the fault tolerant system conguration to
Fault Tolerant mode.
You can disable a peer controller only if:
• All the servers in the chassis are turned o.
• 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 rmware 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
rmware 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 Conguration — 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 conguration and does not delete any data. NOTE: Reset Conguration does
not remove any foreign congurations. Use Clear Foreign Conguration 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.
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