Applies to Netapp StorgageGRID 11.4 and above. Netapp SANtricity OS upgrade Issue The following error message is observed for one or multiple nodes while updating the SANtricity OS: Error: Fatal insta...Applies to Netapp StorgageGRID 11.4 and above. Netapp SANtricity OS upgrade Issue The following error message is observed for one or multiple nodes while updating the SANtricity OS: Error: Fatal installation failure - SANtricity OS staging failed with: Failed. SANtricity OS staging failed with return code RETCODE_ERROR. The OS Upgrade can appear to be Complete but the original firmware version revision is still visible: SANtricity OS Upgrade is not applicable to this node. 11.6 Example: