Update kubernetes operations backup section

Author: bfeshti

modules/ROOT/pages/kubernetes/operations/backup-restore.adoc

@@ -93,6 +93,12 @@ For more information, see link:https://min.io/docs/minio/linux/integrations/aws-
 * The latest Neo4j Helm charts.
 You can update the repository to get the latest charts using `helm repo update`.
 
+[NOTE]
+====
+When using cloud providers, differential backups do not require persistent volumes with previous backups.
+Instead, the chart will first create a full backup in the cloud storage, and then, the subsequent backups will be differential backups that reference this full backup.
+====
+
 === Create a Kubernetes secret
 
 You can create a Kubernetes secret with the credentials that can access the cloud provider bucket using one of the following options:
@@ -368,7 +374,8 @@ tempVolume:
 
 [NOTE]
 ====
-You need to create the persistent volume and persistent volume claim before installing the _neo4j-admin_ Helm chart.
+You need to create the persistent volume and persistent volume claim before installing the _neo4j-admin_ Helm chart only when using local storage.
+When using cloud providers, persistent volumes are not required for differential backups.
 For more information, see xref:kubernetes/persistent-volumes.adoc[Volume mounts and persistent volumes].
 ====
 
@@ -508,7 +515,7 @@ When configuring the _backup-values.yaml_ file, keep the “cloudProvider” fie
 
 [NOTE]
 ====
-You need to create the persistent volume and persistent volume claim before installing the _neo4j-admin_ Helm chart.
+You need to create the persistent volume and persistent volume claim before installing the _neo4j-admin_ Helm chart only when using local storage.
 For more information, see xref:kubernetes/persistent-volumes.adoc[Volume mounts and persistent volumes].
 ====
 
@@ -1076,7 +1083,7 @@ To restore the `system` database, follow the steps described in xref:kubernetes/
 ====
 
 [[kubernetes-backup-migration]]
-== Migration from traditional to cloud-native backups
+== Migrate from traditional to cloud-native backups
 
 To migrate from persistent volume-based backups to cloud-native backups, you need to follow these steps: