You have to make the following Customizing settings for archiving in DBM:
Cross-Archiving Object Customizing:

• Technical Settings
• Check and Delete

Archiving Object-Specific Customizing:

• Technical Settings
• Archive Routing

Basis Customizing:

• Cross-Client File Names/Paths
• Client-Specific File Names

Application-Specific Customizing:

• Archiving Control for DBM Order (Residence Time Check for DBM Order)

Customizing View for the Archiving Object

Using the transaction code SARA, you can set the log file, the size of the archive file, the variants for the deletion program, and whether archiving is to be started automatically or not.