SQL Remote replication depends on access to operations in the transaction log, and access to old transaction logs. Any backup strategy that you implement must incorporate the maintenance of the transaction logs for SQL Remote.
To perform backup activities you require the BACKUP DATABASE system privilege.
The SQL Remote Message Agent (dbremote) must have access to the current and old transaction logs until they are no longer needed.
A consolidated database no longer needs its transaction logs when all remote databases have received and have confirmed that the messages contained in the transaction logs have been successfully applied.
A remote database no longer needs its transaction logs when the consolidated database has received and confirmed that it has successfully applied the messages contained in the transaction logs.
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