What is secondary file group in SQL Server?

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Secondary Data Files are data files that hold all data that do not belong in the Primary Data File. Data that doesn't go into the Primary Data File is told to do so and set in a setting in SQL Server. Secondary Files are optional. These files should have a . ndf extension. 17 янв. 2017 г.

What is the purpose of secondary data file?

Secondary data files are optional and can be used to spread data across multiple files/disks by putting each file on a different disk drive. SQL Server databases can have multiple data and log files, but only one primary data file.

What is a secondary file?

Secondary files can be used to spread data across multiple disks by putting each file on a different disk drive. Additionally, if a database exceeds the maximum size for a single Windows file, you can use secondary data files so the database can continue to grow.

What are file groups in SQL Server?

FilegroupsThe filegroup contains the primary data file and any secondary files that aren't put into other filegroups.User-defined filegroups can be created to group data files together for administrative, data allocation, and placement purposes.Database Files and Filegroups - SQL Server | Microsoft Docs

What is MDF and NDF in SQL Server?

A Microsoft SQL database consists a primary data file (mdf) a secondary data file (ndf) and a transaction log file (ldf). For this article, we will concern ourselves with the mdf and ldf files. MDF stands for Main Database File and contains all the information in a database.

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