If you read the "Symantec Backup Exec™ 2010 Readme" you can find the folowing statement:

Agent for Lotus Domino Server

Supports Lotus Domino version 8.5, including support for the Domino Attachment and Object Service (DAOS).

From: BE 2010 Readme

For more information visit the "Symantec Backup Exec System Recovery Server Edition" Website.

This is a great feature for everyone who will/is using DAOS.