ShadowProtect incremental disk change backup
File type: Backup file
A file with the spi file extension is a ShadowProtect incremental backup image. It contains changes made to a disk since an earlier backup.
The file belongs to ShadowProtect, a Windows backup and disaster recovery application.
Found 2 different file type records with the same spi filename suffix.
File type category:
Backup file
Date updated: October 16, 2026
ShadowProtect was developed by StorageCraft Technology Corporation as software for disaster recovery, data protection and migration.
An .spi file stores the disk changes captured by an incremental backup. It is normally used together with the full backup image and any earlier incremental images required to reconstruct the backed-up disk state.
ShadowProtect uses the image set to restore files, volumes or an entire disk. The format is intended for use by ShadowProtect on Microsoft Windows rather than as a general-purpose archive format.
Use ShadowProtect on Microsoft Windows to access an .spi file. An incremental image may require the corresponding full backup image and earlier files in the backup set, so keep the complete image chain together.
ShadowProtect can use the image to browse or restore the backed-up files and volumes; the file is not intended to be opened as a document in another application.
An .spi file normally cannot be meaningfully converted to another file format. Use ShadowProtect to restore its contents to files, a volume or a disk instead.
Restoration requires the related backup image set, including the full image and any earlier incremental images on which the file depends.
Software applications that can open spi files:
Microsoft Windows
Software apps that create spi files:
Microsoft Windows
Software apps that backup spi files:
Microsoft Windows
File type category:
Bitmap image file
Date updated: September 19, 2017
Record marked as obsolete and not updated for a long time.
The spi files are used by some digital scanners developed by Siemens and Philips companies. Seems to be very rare used or obsolete file format without support from the developers.
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