Back up LOB Externalization

If you use LOB externalization, consider backing it up. Ensure that both primary and secondary write to the same external storage. If writing to the same external storage is not possible, disable LOB externalization.
If you disable LOB externalization, the Oracle database is used for storage.
Keep in mind that this process is time consuming and difficult, especially if your environment has a large data set. Symantec recommends that you implement an incremental backup strategy to cut down on overhead. Consider using RAID 5, 6, or 10 to store the backup.
Several strategies exist for keeping a secondary LOB externalization backup. For example, use a high availability NAS with a built-in redundancy, run a scheduled rsync, maintain a Windows file system HA, use a block level mirrored storage replication, and so on.