You can use Exchange backup copies to archive your SnapManager backup copies. You use NTBackup (which, in turn, uses the Exchange Backup Agent) to create a backup copies of your Exchange databases. In this case, the Exchange data itself is captured and archived.
Because you do not use SnapManager to create the backup copy, you also do not use SnapManager to perform the restore process, so the SnapInfo directory does not need to be archived.
The following diagram represents this archiving method:
