If you migrate vCenter Server for Windows, you can transfer the historical data of your source vCenter Server instance together with the core configuration data.
What to read next
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 Errors If 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.
Class Diagrams for Deferred Import The vcenter deployment API provides classes and interfaces that you can use for configuring and controlling the historical data import.
Use the Deferred Import Sample You can use the vCenter Server Management Interface to migrate your vCenter Server instance and to run the vc_import_history_sample.py sample to pause and resume the historical data import.