Merge pull request #96098 from vashirova/OADP-1791-backing-up-applications

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

@@ -12,15 +12,21 @@ Because all taken backup remains until expired, also check the time to live (TTL
 
 
 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:
 
 ifdef::openshift-rosa,openshift-rosa-hcp[]
 The `Backup` CR creates backup files for Kubernetes resources and internal images on S3 object storage.
 endif::openshift-rosa,openshift-rosa-hcp[]
 
 ifndef::openshift-rosa,openshift-rosa-hcp[]
 * 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,