use_vss

--use_vss={auto|software_auto|acronis|native|software|hardware|none}

Volume Shadow Copy Service (VSS) notifies VSS-aware applications that the backup is about to start. This ensures the consistent state of all data being used by such applications. Then, VSS tells a snapshot provider to create the snapshot. You can select the snapshot provider that VSS will use for taking snapshots.

Available values of the parameter are described below. If a snapshot cannot be taken by using any of the specified providers, Acronis Backup will not use VSS. Instead, it will take a snapshot by using its own Snapshot Manager driver (snapman.sys).

• auto

  VSS will use the hardware-based provider that supports the source volume. If one is not found, VSS will try to use a software-based provider, the Microsoft Software Shadow Copy provider, and Acronis VSS Provider in turn.

• software_auto

  VSS will use any available software-based provider. If one is not found, VSS will try to use the Microsoft Software Shadow Copy provider, and Acronis VSS Provider in turn.

• acronis

  VSS will use Acronis VSS Provider.

• native (by default)

  VSS will use the Microsoft Software Shadow Copy provider.

• software

  VSS will use any available software-based provider that supports the source volume.

• hardware

  VSS will use the hardware-based provider that supports the source volume.

• none

  Choose this value if your database is incompatible with VSS. Acronis Backup will take a snapshot by using its own Snapshot Manager driver (snapman.sys). Snapshots are taken faster but data consistency of the applications whose transactions are not completed cannot be guaranteed.