// Module included in the following assemblies:
//
// * virt/backup_restore/virt-disaster-recovery.adoc

:_mod-docs-content-type: CONCEPT
[id="virt-dr-solutions-rh-managed-clusters_{context}"]
= Disaster recovery solutions for Red{nbsp}Hat managed clusters

[role="_abstract"]
You can use disaster recovery (DR) solutions that combine {rh-rhacm-first}, Red{nbsp}Hat Ceph Storage, and {rh-storage} components to failover applications between sites.

[id="metro-dr-odf_{context}"]
== Metro-DR for {rh-storage-first}

{VirtProductName} supports the Metro-DR solution for {rh-storage}, which provides two-way synchronous data replication between managed {VirtProductName} clusters installed on primary and secondary sites.

*Metro-DR differences*

* This synchronous solution is only available to metropolitan distance data centers with a network round-trip latency of 10 milliseconds or less.
* Multiple disk VMs are supported.
* To prevent data corruption, you must ensure that storage is fenced during failover.
+
[TIP]
====
Fencing means isolating a node so that workloads do not run on it.
====

For more information about using the Metro-DR solution for {rh-storage} with {VirtProductName}, see {ibm-title}'s {rh-storage} Metro-DR documentation.

[id="regional-dr-odf_{context}"]
== Regional-DR for {rh-storage-first}

{VirtProductName} supports the Regional-DR solution for {rh-storage}, which provides asynchronous data replication at regular intervals between managed {VirtProductName} clusters installed on primary and secondary sites.

*Regional-DR differences*

* Regional-DR supports higher network latency between the primary and secondary sites.
* Regional-DR uses RBD snapshots to replicate data asynchronously. Currently, your applications must be resilient to small variances between VM disks. You can prevent these variances by using single disk VMs.
* Using the import method when selecting a population source for your VM disk is recommended. However, you can protect VMs that use cloned PVCs if you select a `VolumeReplicationClass` that enables image flattening. For more information, see the {rh-storage} documentation.

For more information about using the Regional-DR solution for {rh-storage} with {VirtProductName}, see {ibm-title}'s {rh-storage} Regional-DR documentation.
