Working with backup sets : VSS-aware backup sets (Windows) : Restoring a VSS-aware backup set : Specifying the VSS restore method
 
Specifying the VSS restore method
On the Select the restore method page, select the required VSS restore method, and then click Next:
VSS Restore performs an online restore of the selected backup session to the original backup source (or alternate location) using the destination computer’s Microsoft VSS tools.
Database Restore performs an online restore of the selected backup session to the original backup source (or alternate location). This option is only available for Microsoft SQL Server (VSS-aware) backup sets.
IMPORTANT:  Before you restore a database of an Always On Availability Group, you must remove the target database from the Availability Group. After the restore, you can add the database back to the Availability Group.
File Restore allows you to selectively restore individual files from a backup session. This is a pure file restore, which is useful with the corresponding Microsoft SQL Server, Microsoft Exchange Server, or Microsoft SharePoint Server management tools.
File Level Restore is available for Microsoft Hyper-V Server and Microsoft Hyper-V Server Cluster backup sets that were backed up with the Use FLR option. This allows restores of individual files that were on the virtual machine’s virtual disk(s).
Granular Restore applies to Microsoft Exchange Server and Microsoft SharePoint Server.
NOTE:  When performing a granular restore of a Microsoft SharePoint Server (VSS-aware) backup set to restore items from a SharePoint site's list, checked out items are checked in during the restore process.
F1 Help: "Select the Restore Method"