• Hi

    The "uncompress" actually happens inside the SQL Engine - so no additional space is required for a "temp" file. The only space required is the size of the Database and Transaction Log.

    Note: If a backup file is 900MB - the actual size of the database Data file is 3.5GB and the Log 100MB - then this is the amount of space required on disk for the restored Database files (Data and Log)

    Thanks

    Kevin