# Conditions for Physical Backups

__*Physical backup conditions*__
__*Binary backup conditions*__

+ The server must not modify the data files during the backup.
+ If you copy real-time data files, prevent writing to these files.
+ You can also minimize the impact on TiDB and applications by using a technology that separates the data files to be backed up from the TiDB database server:
  + snapshots
  + reproduced
-------------------------------------------------------------
The server must not modify the data files during the backup.

If you copy real-time data files, prevent writing to these files.

You can also minimize the impact on TiDB and applications by using a technology that separates the data files to be backed up from the TiDB database server:
  snapshots
  reproduced