Which two are Oracle recommendations for media based backups performed for a database running on a Database Machine?
A. Allocate equivalent number of channels and instances per tape drive.
B. Perform periodic level 0 backups and daily cumulative level-1 backups.
C. Use the InfiniBand network between the database server and media server.
D. Configure Recovery Manager (RMAN) channels to connect to the least loaded instances.
E. Use InfiniBand network between the media server and the storage servers.
Correct Answer: AC
Explanation/Reference:
A: Configure one RMAN channel per tape drive and add tape drives to scale backup rates.
C: Configure the Preferred Network Interface (PNI) to direct the Oracle Secure Backup traffic over the InfiniBand network interface.
Example:
ob> lspni (List Preferred Network Interface)
mediaserver1:
PNI 1:
interface: mediaserver1-ib
clients: dbnode1, dbnode2, dbnode3, dbnode4, dbnode5, dbnode6, dbnode7, dbnode8
PNI 2:
interface: mediaserver1
clients: adminserver dbnode1:
PNI 1:
interface: dbnode1-ib
clients: mediaserver1
Note:
* Using the Sun ZFS Backup Appliance as an Oracle RMAN backup target for an Oracle Exadata system delivers much faster backup and recovery, enabling organizations to achieve shorter recovery time objectives and shrink backup windows. The appliance is designed for high sustained read and write I/O performance, and it is connected to the Oracle Exadata system via a high-throughput InfiniBand network fabric.
* As the only unified storage vendor to support InfiniBand as a storage network for backup and restore operations, Oracle is leading the way with native high-bandwidth interconnects.
* The InfiniBand network provides 40 Gb of bandwidth per port between the database servers, storage cells, and the Sun ZFS Backup Appliance.
Backup and restore operations can be automatically parallelized across all database nodes, Oracle Exadata storage cells, Sun ZFS Backup Appliance channels, and controllers.
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