Part II - Pre-upgrade tasks Child TopicsDownload VMware vSphere files for upgradeDownload the files needed to upgrade to VMware vSphere 6.7. Each item is listed in the Converged System RCM 6.7. Back up the system and hostsFollow this procedure for the order in which you should back up Converged Systems and hosts. Take a snapshot of all VMware vSphere management VMsTake a snapshot of VMware vSphere management VMs (vCSA and PSC) and Windows based vCenter, DB, and VM (If applicable). Upgrade components to the minimum required RCM versionsUpgrade all Converged System components, except the VMware components, to the required versions in the Converged System Release 6.7 RCM to which you are upgrading. Prepare for the VMware vCenter Server upgradeTo prepare for the VMware vCenter Server upgrade, address the customer-specific configuration requirements. Estimate upgrade timeReview the following considerations to ensure that you provide adequate scheduled maintenance windows to complete the upgrade. Pre-upgrade considerations for Enhanced Link Mode Consider the following before starting the Enhanced Link Mode (ELM) upgrade.