Backup Exadata Storage and Compute Servers

Backup Storage Servers:
Oracle does not support installation of any software of any type.  You’re not required to backup your storage server, Oracle automatically create backups of the OS and cell services software.  Oracle automatically maintains copies of the latest cell boot images and cell server software in /opt/oracle.cellos/iso/LastGoodConfig.  In addition, there are active and inactive system volume partitions to allow Oracle performing both in-partition and out-of partion patches.  During the patching activities, Oracle performs inactive partition first with out-of-partition and mark these partitions as active when successful. 

cd /opt/oracle.cellos/iso/lastGoodConfig

To display its contents, you need to mount the CELLBOOT USB flash drive partition.  Login as root, run fdisk –l to find your internal USB drive partition, then mount it (mount /dev/sdm1 /mnt/usb).  You can also creating a cell bot image on an external USB drive for backup redundancy purpose.

Backup the Compute Node:

You can install third-party backup software and agents on the Exadata Compute nodes.  Your backups will need to be done over either 1GbE, 10GbE, or or high speed infiniBand.  You can also use NET3 as the backup network. 

To see the compute node free storage capacity

vgdisplay | egrep '(VGExaDb|Alloc PE|Free  PE)'

  VG Name               VGExaDb

  Alloc PE / Size       59904 / 234.00 GB

  Free  PE / Size       153827 / 600.89 GB