A single-pass backup (aka application-aware backup) is a disk backup containing metadata of VSS-aware applications that are present on the disk. This metadata enables browsing and recovery of the backed-up application data without recovering the entire disk or volume.
Single-pass is available for machines running SQL Server, SharePoint Server and Active Directory. Single-pass is not available for Microsoft Exchange.
Having Acronis Backup, you will see following new part (on local management or centralized management console) when Create backup plan:
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