Merge pull request #97125 from openshift-cherrypick-robot/cherry-pick-96098-to-enterprise-4.15

[enterprise-4.15] OADP-1791: Added suggestions for the backup types

Author: shdeshpa07

backup_and_restore/application_backup_and_restore/backing_up_and_restoring/backing-up-applications.adoc

@@ -11,10 +11,16 @@ Frequent backups might consume storage on the backup storage location. Check the
 Because all taken backup remains until expired, also check the time to live (TTL) setting of the schedule.
 
 You can back up applications by creating a `Backup` custom resource (CR). For more information, see xref:../../../backup_and_restore/application_backup_and_restore/backing_up_and_restoring/oadp-creating-backup-cr.adoc#oadp-creating-backup-cr-doc[Creating a Backup CR].
+The following are the different backup types for a `Backup` CR:
 
 * The `Backup` CR creates backup files for Kubernetes resources and internal images on S3 object storage.
+
+* If you use Velero's snapshot feature to back up data stored on the persistent volume, only snapshot related information is stored in the S3 bucket along with the Openshift object data.
+
 * If your cloud provider has a native snapshot API or supports CSI snapshots, the `Backup` CR backs up persistent volumes (PVs) by creating snapshots. For more information about working with CSI snapshots, see xref:../../../backup_and_restore/application_backup_and_restore/backing_up_and_restoring/oadp-backing-up-pvs-csi-doc.adoc#oadp-backing-up-pvs-csi-doc[Backing up persistent volumes with CSI snapshots].
 
+If the underlying storage or the backup bucket are part of the same cluster, then the data might be lost in case of disaster.
+
 For more information about CSI volume snapshots, see xref:../../../storage/container_storage_interface/persistent-storage-csi-snapshots.adoc#persistent-storage-csi-snapshots[CSI volume snapshots].
 
 :FeatureName: The `CloudStorage` API, which automates the creation of a bucket for object storage,