How to properly configure real-time database backups?

Configuring backups for databases operating 24/7 requires special approaches that exclude stopping business processes. Regular copying of database files at the time of writing can lead to table corruption and transaction integrity violations, which is why specialized hot backup methods are used.

The first step is to use the built-in DBMS mechanisms to create logical dumps or physical memory snapshots and transaction logs. Write-ahead logs play a key role as they record every change before it is applied to the main data files, allowing the database to be restored with second-by-second precision.

To implement a reliable hot backup scheme, the administrator needs to perform the following steps:

It is important to consider that continuous copying creates constant additional load on the disk subsystem and network. Therefore, to transfer backups to remote servers, it is recommended to use dedicated network interfaces and limit bandwidth during peak user activity hours.