Restructured section

Restructured backup and dr section for clarity and thoroughness

Author: peachdawnleach

src/current/v25.4/work-with-virtual-clusters.md

@@ -118,21 +118,45 @@ When connected to a virtual cluster from the DB Console, metrics which measure S
 
 When cluster virtualization is enabled, [backup]({% link {{ page.version.version }}/backup.md %}) and [restore]({% link {{ page.version.version }}/restore.md %}) commands are scoped to the virtual cluster by default.
 
-### Back up a virtual cluster
+Cockroach Labs recommends that you regularly [back up]({% link {{ page.version.version }}/take-full-and-incremental-backups.md %}#full-backups) your _application virtual cluster (app VC)_. Only the app VC's data and settings are included in these backups, and data and settings for other virtual clusters or for the _system virtual cluster (system VC)_ are omitted. If needed, you can [restore](#restore-a-virtual-cluster) these backups to a new app VC. Use the following process to back up your app VC.
 
-To back up a virtual cluster:
+1. [Connect](#connect-to-a-virtual-cluster) to the app VC as a user with the `admin` role on the app VC:
 
-1. [Connect to the virtual cluster](#connect-to-a-virtual-cluster) you want to back up as a user with the `admin` role on the virtual cluster.
-1. [Back up the cluster]({% link {{ page.version.version }}/backup.md %}). Only the virtual cluster's data and settings are included in the backup, and data and settings for other virtual clusters or for the system virtual cluster is omitted.
+    {% include_cached copy-clipboard.html %}
+    ~~~ shell
+    cockroach sql --url \
+    "postgresql://root@{primary node IP or hostname}:26257?options=-ccluster={app_virtual_cluster_name}&sslmode=verify-full" \
+    --certs-dir "certs"
+    ~~~
 
-For details about restoring a backup of a virtual cluster, refer to [Restore a virtual cluster](#restore-a-virtual-cluster).
+1. [Perform a full backup]({% link {{ page.version.version }}/backup.md %}#back-up-a-cluster):
 
-### Back up the entire cluster
+    {% include_cached copy-clipboard.html %}
+    ~~~ sql
+    BACKUP INTO 'external://backup_s3' AS OF SYSTEM TIME '-10s';
+    ~~~
 
-To back up the entire CockroachDB cluster, including all virtual clusters and the system virtual cluster:
+    {% include {{ page.version.version }}/backups/backup-storage-collision.md %}
 
-1. [Connect to the system virtual cluster](#connect-to-the-system-virtual-cluster) as a user with the `admin` role on the system virtual cluster.
-1. [Back up the cluster]({% link {{ page.version.version }}/backup.md %}), and include the `INCLUDE_ALL_SECONDARY_TENANTS` flag in the `BACKUP` command. All virtual clusters and the system virtual cluster are included in the backup.
+You can also back up your system VC to preserve metadata such as users and cluster settings. Use the following process to back up your system VC.
+
+1. [Connect](#connect-to-the-system-virtual-cluster) to the system VC as a user with the `admin` role on the system VC:
+
+    {% include_cached copy-clipboard.html %}
+    ~~~ shell
+    cockroach sql --url \
+    "postgresql://root@{primary node IP or hostname}:26257?options=-ccluster=system&sslmode=verify-full" \
+    --certs-dir "certs"
+    ~~~
+
+1. [Perform a full backup]({% link {{ page.version.version }}/backup.md %}#back-up-a-cluster):
+
+    {% include_cached copy-clipboard.html %}
+    ~~~ sql
+    BACKUP INTO 'external://backup_s3' AS OF SYSTEM TIME '-10s';
+    ~~~
+
+    {% include {{ page.version.version }}/backups/backup-storage-collision.md %}
 
 ### Restore a virtual cluster
 
@@ -147,13 +171,6 @@ To restore only a virtual cluster:
 1. [Connect to the destination virtual cluster](#connect-to-a-virtual-cluster) as a user with the `admin` role on the virtual cluster.
 1. [Restore the cluster]({% link {{ page.version.version }}/restore.md %}). Only the virtual cluster's data and settings are restored.
 
-### Restore the entire cluster
-
-To restore the entire CockroachDB cluster, including all virtual clusters and the system virtual cluster:
-
-1. [Connect to the destination system virtual cluster](#connect-to-the-system-virtual-cluster) as a user with the `admin` role on the system virtual cluster.
-1. [Restore the cluster]({% link {{ page.version.version }}/restore.md %}) from a backup that included the the `INCLUDE_ALL_SECONDARY_VIRTUAL_CLUSTERS` flag. All virtual clusters and the system virtual cluster are restored.
-
 ## Configure cluster settings
 
 When [cluster virtualization]({% link {{ page.version.version }}/cluster-virtualization-overview.md %}) is enabled, each [cluster setting]({% link {{ page.version.version }}/cluster-settings.md %}) is scoped to either a virtual cluster or the system virtual cluster.