Setting SGPIO Mode

The storage controller can connect to the backplane in I2C mode (default setting for Dell backplanes) or
Serial General Purpose Input/Output (SGPIO) mode. This connection is required for blinking LEDs on the
drives. Dell PERC controllers and backplane support both these modes. To support certain channel
adapters, the backplane mode must be changed SGPIO mode.
The SGPIO mode is only supported for passive backplanes. It is not supported for expander-based
backplanes or passive backplanes in downstream mode. Backplane firmware provides information on
capability, current state, and requested state.
After LC wipe operation or iDRAC reset to default, the SGPIO mode is reset to disabled state. It compares
the iDRAC setting with the backplane setting. If the backplane is set to SGPIO mode, iDRAC changes its
setting to match the backplane setting.
Server power cycle is required for any change in setting to take effect.
You must have Server Control privilege to modify this setting.
NOTE: You cannot set the SGPIO mode using iDRAC Web interface.

Setting SGPIO Mode Using RACADM

To configure the SGPIO mode, use the SGPIOMode object with the set sub command. If it is set to
disabled, it is I2C mode. If enabled, it is set to SGPIO mode. For more information, see the iDRAC
RACADM Command Line Interface Reference Guide available at dell.com/support/manuals.
Choosing Operation Mode to Apply Settings
While creating and managing virtual disks, setting up physical disks, controllers, and enclosures or
resetting controllers, before you apply the various settings, you must select the operation mode. That is,
specify when you want to apply the settings:
• Immediately
During the next system reboot
At a scheduled time
As a pending operation to be applied as a batch as part of a single job.

Choosing Operation Mode Using Web Interface

To select the operation mode to apply the settings:
1. You can select the operation mode on when you are on any of the following pages:
OverviewStoragePhysical Disks Setup.
OverviewStorageVirtual Disks Create
OverviewStorageVirtual Disks Manage
OverviewStorageControllers Setup
OverviewStorageControllers Troubleshooting
OverviewStorageEnclosures Setup
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