Applies to StorageGRID SG5700 Appliance StorageGRID OS 11.6.0 or earlier SANtricity OS 11.70.3 or earlier Issue Error was observed while upgrading SANtricity OS via Grid Manager. Fatal installation fa...Applies to StorageGRID SG5700 Appliance StorageGRID OS 11.6.0 or earlier SANtricity OS 11.70.3 or earlier Issue Error was observed while upgrading SANtricity OS via Grid Manager. Fatal installation failure - SANtricity OS precheck failed with: RuntimeError: Connection error while executing SYMbol request. API response decode failed. 0 byte response received. Verify 7-segment for both the compute and storage controller. Verify the SANtricity System manager is accessible.