.NDF File

File extension ndf is associated with Microsoft SQL Server, a relational database server for Microsoft Windows.

The ndf files are used for secondary data files that make up all the data files, other than the primary data file.

Secondary data files are used with extra large databases and often are stored on other hard drives, than primary database files (mdf files).

Some databases might not have any secondary data files, while other might have several secondary data files.

Files with ndf extension is used for Microsoft SQL Server secondary data files. The secondary data file is created by Microsoft SQL Server, when the primary data file (mdf file) is full of data and other data cannot be stored in it. Secondary data files are often stored on other partitions, or hard drives then primary data files.

How to open:

Use Microsoft SQL Server to open ndf files.

How to convert:

There is no way how to convert *.ndf files to other formats.