You can use the API to perform operations related to stage 2 of the upgrade process. You can also perform historical data transfer operations. What to read next Upgrade Stage 2You can upgrade your vCenter Server instance by using the API, CLI, or GUI. Upgrading a vCenter Server InstanceYou can use the API during stage 2 of the vCenter Server instance upgrade. Workflows for Upgrade Stage 2 You can use the vcenter deployment API to run the upgrade stage 2 process of your vCenter Server instance. HTTP Requests for Upgrade Stage 2You can use HTTP requests or the API to upgrade your vCenter Server instance. Historical Data TransferIf you migrate vCenter Server for Windows, you can transfer the historical data of your source vCenter Server instance together with the core configuration data. Deferred Import The deferred import is a process of historical data transfer after the successful migration of a vCenter Server instance with an external database. The historical data includes statistics, events, and tasks. Historical Data Import ErrorsIf an error appears during the data import, the import stops and the process enters in a BLOCKED state. You can resume the data import after you eliminate the cause. Parent topic: vCenter Server Management
