Backup concepts

Before you start backing up your data, you need to understand the types of data, policies, and media that you can use.

Backup policies
No single backup policy can meet the needs of all users. A policy that works well for a system with one user, for example, could be inadequate for a system that serves one hundred users. Likewise, a policy developed for a system on which many files are changed daily would be inefficient for a system on which data changes infrequently.
Backup media
Several different types of backup media are available. The different types of backup media available to your specific system configuration depend upon both your software and hardware.
Backup strategy
There are two methods of backing up large amounts of data.

Parent topic: System backup