You might need to upgrade the SANtricity OS (controller firmware) on an E2700 controller if the controller is operational but not functioning optimally, or if you want to use the new features in a new software release.
In general, SANtricity OS (controller firmware) upgrades should not be applied to the E2700 controller unless the firmware release is specifically stated to be compatible with the StorageGRID Webscale appliance.
The E2700 controller used in the StorageGRID Webscale appliance supports SANtricity OS (controller firmware) version 8.20.x only. You should not install a different version.
Shutting down the E5600SG controller interrupts the connectivity to the E2700 controller, so you can apply the firmware upgrade.
The final LED state is 99.
The final LED state is HA for version 1.5 or later, or SG for version 1.3.