Users Guide

NOTE:
• Warning messages are displayed when the setting is being changed as there is a possibility of data loss.
• LC Wipe or iDRAC reset operations do not change the expander setting for this mode.
• This operation is supported only in real-time and not staged.
• You can change the backplane conguration multiple times.
• The backplane splitting operation can cause data loss or foreign conguration if the drive association changes from one controller
to another controller.
• During the backplane splitting operation, the RAID conguration may be impacted depending on the drive association.
Any change in this setting only takes eect after a system power reset. If you change from Split mode to Unied, an error message is
displayed on the next boot as the second controller does not see any drives. Also, the rst controller will see a foreign conguration. If you
ignore the error, the existing virtual disks are lost.
Conguring backplane mode using web interface
To congure backplane mode using iDRAC web interface:
1 In the iDRAC web interface, go to Overview > Storage > Enclosures > Setup
The Enclosure Setup page is displayed.
2 From the Controller drop-down menu, select the controller to congure its associated enclosures.
3 In the Value column, select the required mode for the required backplane or enclosure:
• Unied Mode
• Split Mode
• Split Mode 4:20
• Split Mode 8:16
• Split Mode 16:8
• Split Mode 20:4
• Information Not Available
4 From the Apply Operation Mode drop-down menu, select Apply Now to apply the actions immediately, and then click Apply.
A job ID is created.
5 Go to the Job Queue page and verify that it displays the status as Completed for the job.
6 Power cycle the system for the setting to take eect.
Conguring enclosure using RACADM
To congure the enclosure or backplane, use the set command with the objects in BackplaneMode.
For example, to set the BackplaneMode attribute to split mode:
1 Run the following command to view the current backplane mode:
racadm get storage.enclosure.1.backplanecurrentmode
The output is:
BackplaneCurrentMode=UnifiedMode
2 Run the following command to view the requested mode:
racadm get storage.enclosure.1.backplanerequestedmode
The output is:
BackplaneRequestedMode=None
Managing storage devices
233