SQL Server ErrorLog Error Log description

By default, SQL Server saves seven ErrorLog files named:
ErrorLog
ErrorLog.1
ErrorLog.2
ErrorLog.3
ErrorLog.4
ErrorLog.5
ErrorLog.6
In apacs OS 6.1, The ErrorLog file is saved in the c: \ Program Files \ Microsoft SQL Server \ MSSQL $ WINCC \ LOG folder. In apacs OS 7.0, the ErrorLog file is saved in the c: \ Program Files \ Microsoft SQL Server \ MSSQL.1 \ MSSQL \ LOG folder. The ErrorLog file contains the latest information; The ErrorLog.6 file contains the oldest information.
Each time you restart SQL Server, these log files are in the following cycle:
Delete all data in ErrorLog.6 and create a new ErrorLog file.
All data in the last ErrorLog file is written to the ErrorLog.1 file.
All data in the last ErrorLog.1 file is written to the ErrorLog.2 file.
All data in the last ErrorLog.2 file is written to the ErrorLog.3 file.
All data in the last ErrorLog.3 file is written to the ErrorLog.4 file.
All data in the last ErrorLog.4 file is written to the ErrorLog.5 file.
All data in the last ErrorLog.5 file is written to the ErrorLog.6 file.
If one of the ErrorLog files is large, you can manually cycle these ErrorLog files by running the sp_cycle_errorlog stored procedure. Note: The data in the old ErrorLog file will be overwritten! If you must save the data in the old ErrorLog file, you can copy these old ErrorLog files to an external storage medium.
In apacs OS 6.1, you can use SQL Q