.SNA File Extension

Drive Snapshot Primary Backup File

Developer Tom Ehlert
3.8  |  9 Votes

What is an SNA file?

An SNA file is a backup file created by Drive Snapshot, a Windows utility used to back up a user's drives. It contains either all of or the first portion of a backup disk image. SNA files are often accompanied by additional backup files, which use the .SN1, .SN2, and so on extensions.

More Information

Screenshot of a .sna file in Drive Snapshot
SNA file open in Drive Snapshot

Drive Snapshot is a simple backup utility developed by Tom Ehlert. It allows users to create backups of their Windows drives, which they can use to restore those drives (if the drive becomes damaged or corrupted) or retrieve previous versions of those drives' contents.

Primarily, Drive Snapshot saves the backups it creates as SNA files. Users can load SNA files in Drive Snapshot to browse their contents, retrieve files from the backup, and restore the backup's contents.

However, if a being-backed-up drive's contents are large enough, Drive Snapshot splits the drive's contents among multiple backup files: a primary SNA file and one or more backup continuation files. These continuation files use the same filename as the SNA file, but the .sn1, .sn2, etc. extensions. To retrieve files from or restore a backup that includes continuation files, you must possess the backup's SNA file and all of its continuation files.

How to open an SNA file

You can use Drive Snapshot (Windows) to view and restore the files an SNA file contains. Before doing so, make sure to place your SNA file and all its continuation files (if any) in the same directory.

Then, open Drive Snapshot and select either Restore Disk from File, to restore your backup's contents, or View contents of saved Disk Image, to view your backup's contents. In the window that appears, browse to your SNA file, then restore or view your backup's contents.

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Programs that open SNA files


NO$GBA Snapshot File

Developer NO$GBA
3.0  |  5 Votes

Game file created by NO$GBA, an emulator for Nintendo DS and Game Boy Advance handheld game systems; saves a snapshot of a running game and can be loaded to resume gameplay at the exact spot that the snapshot was taken; requires the original ROM (.NDS or .GBA file) that was used to create the snapshot in order to load properly.

Programs that open SNA files


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