Which two statements are true about data paths used during RMAN backup and restore operations when
media management servers use InfiniBand to connect to an X5 Database Machine?
A.
During backups, data blocks are always read from Smart Flash Cache by cellsrv.
B.
During restores, data blocks read from the media are sent to a database server that sends the blocks to
cellsrv to be written.
C.
During backups, data blocks are read by cellsrv and sent to a database server, which sends the blocks to
the media manager to be written to media.
D.
During backups, data blocks are read by cellsrv and sent directly to the media manager to be written to
media.
E.
During restores, data blocks read from the media are sent directly to cellsrv to be written.
Explanation:
The fastest database backup is achieved via InfiniBand.
Get dedicated Media Servers that connect to tape library
Offers backup rates of up to 12GB/secRMAN does not back up directly to tape. However, it will integrate with media management software such as
Oracle Secure Backup and utilize their capabilities to manage tape libraries.
Exadata Database Machine: The Database Machine contains the databases that need to be backed up. Oracle
RMAN is the only mechanism to back up the databases that utilize Exadata Storage Servers as the storage.
RMAN processes run on the database servers and interact with the Oracle Secure Backup (OSB) agent, which further interacts with the media management software and enables RMAN to communicate with the tape library.
References: http://apprize.info/data/oracle_4/6.html