Hello Alex,
1) The SAP Content Server is not an archiving system.
2) It does not support optical storage or optical archiving. Storage takes place in a database or on a file system.
3) The SAP Content Server does not support replication
4) The SAP CS backup strategy is to backup the complete database (or filesystem storage) on external storage media. In case of emergency this backup is used to reconstruct the SAP Content Server.
note: SAP CS 6.x is considered, may be SAP CS would have been more sophisticated by now.
Thanks,
Kolusu