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.NDF File Extension

File TypeSQL Server Secondary Database File

3.4 (11 Votes)
CategoryDatabase Files

What is an NDF file?

Secondary database file used by Microsoft SQL Server; created when the primary .MDF database becomes too large (such as when there is no disk space left); may also be manually added to the SQL Server File Group to distribute data between the two files.

More Information

NDF files are typically stored on a different hard disk or partition than the primary database file. Each NDF file uses the same filename as the corresponding MDF file, such as "mydb.mdf" and "mydb.ndf." Also, the NDF file cannot be opened by SQL Server without the MDF file attached.

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Programs that open NDF files

Updated 2/5/2018

About NDF Files

Our goal is to help you understand what a file with a *.ndf suffix is and how to open it.

The SQL Server Secondary Database file type, file format description, and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

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