> For the complete documentation index, see [llms.txt](https://docs.storware.eu/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.storware.eu/backup-and-recovery-7.3/deployment/backup-destinations/filesystem/synthetic-file-system.md).

# Synthetic File System

## **Synthetic File System**

A synthetic file system allows us to store and use incremental backups as if they were full backup files, but they take up a fraction of full file size.

To start using Synthetic File System read **Prerequisites** for two supported scenarios:

Synthetic filesystem [**XFS/NFS 4.2**](/backup-and-recovery-7.3/deployment/backup-destinations/filesystem/synthetic-file-system/synthetic-xfs.md)

Synthetic filesystem [**DD Boost**](/backup-and-recovery-7.3/deployment/backup-destinations/filesystem/synthetic-file-system/synthetic-ddboost.md)