harikrishna-patnala commented on code in PR #556:
URL:
https://github.com/apache/cloudstack-documentation/pull/556#discussion_r2332995967
##########
source/adminguide/backup_and_recovery.rst:
##########
@@ -196,8 +196,60 @@ in the system, the user will be prompted to reconfigure
the Instance before crea
If the backup was created in a release prior to 4.21, the backup metadata
won't contain the instance configuration details,
so users would have to fill in the required details by clicking on the
Configure Instance button.
+Creating a New Instance from Backup in Another Zone
+---------------------------------------------------
+
+Since **Apache CloudStack 4.22**, users can create a new Instance from a
Backup in another Zone.
Review Comment:
can we please rephrase it explaining what is another zone, like a different
zone where instance and backup are created.
##########
source/adminguide/backup_and_recovery.rst:
##########
@@ -196,8 +196,60 @@ in the system, the user will be prompted to reconfigure
the Instance before crea
If the backup was created in a release prior to 4.21, the backup metadata
won't contain the instance configuration details,
so users would have to fill in the required details by clicking on the
Configure Instance button.
+Creating a New Instance from Backup in Another Zone
+---------------------------------------------------
+
+Since **Apache CloudStack 4.22**, users can create a new Instance from a
Backup in another Zone.
+Currently, this capability is supported only by the **NAS Backup & Recovery
plugin**.
+
+When creating a Backup Repository, the administrator can enable the **Disaster
Recovery as a Service (DRaaS)** option.
+This allows the repository to be used for creating Instances in other Zones.
The setting can be changed later as well
+using the Edit Backup Repository action button.
+
+|B&R-DRaaS-Enable-Add.png|
+
+Once DRaaS is enabled for a Backup Repository, users will see the option to
**select a Zone** while creating a new Instance from a Backup.
+
+|B&R-DRaaS-Select-Zone.png|
+
+The new Instance will be created in the selected Zone, with the configuration
either inherited from the backup or chosen by the user.
+Configurations stored in the backup are automatically selected if the same
resources are present in the destination Zone.
+
+For example, if the same template exists in both the source and destination
Zones, it will be auto-selected.
+Users will still need to manually select configurations that are unique to a
single Zone, such as networks.
+
+Points to Note
+~~~~~~~~~~~~~~
+
+- A DRaaS-enabled Backup Repository can be used to create Instances in **all
Zones** within the CloudStack environment.
+- The administrator must ensure that the Backup Repository is **reachable and
mountable** from hosts in other Zones.
+- Restore operations are performed by mounting the Backup Repository over
**NFS, CIFS, or CephFS** (depending on configuration),
+ and then copying the backup files to Primary Storage.
+
+NFS Performance Considerations
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+NFS performance over WAN may become a bottleneck. Two approaches are
recommended:
Review Comment:
```suggestion
NFS performance over WAN may become a bottleneck for backup and recovery
operations. Following two approaches are recommended to address this:
```
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