Perform pre-upgrade steps (SharePoint Server 2010)
Applies to: SharePoint Server 2010
After you have planned your upgrade process to Microsoft SharePoint Server 2010, you can start the upgrade process by following the required pre-upgrade steps.
In this section:
The pre-upgrade checker identifies potential upgrade issues in your environment. Run this as you plan your upgrade and before you start the upgrade process, so that you can address these issues.
Create a full backup of your environment to ensure that you can recover if upgrade does not go as planned.