# Datacenter replication/failover

**URL:** <https://discuss.elastic.co/t/datacenter-replication-failover/4349>\
**Category:** Elasticsearch\
**Created:** [May 4, 2011, 5:33pm UTC](https://discuss.elastic.co/t/datacenter-replication-failover/4349 "2011-05-04T17:33:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![jacorob](https://avatars.discourse-cdn.com/v4/letter/j/dec6dc/32.png) [@jacorob](https://discuss.elastic.co/u/jacorob)\
**Post date:** [May 4, 2011, 5:33pm UTC](https://discuss.elastic.co/t/datacenter-replication-failover/4349/1 "2011-05-04T17:33:27Z")

</div>

In March of last year there was discussion of supporting replication  
across datacenters

- A single cluster that spans two data centers, with special  
allocation strategy that make sure that a shard and its replica do not  
exists on the same data center. And that read / search prefer "local"  
data center shards then going to search on another data center.

[http://groups.google.com/a/elasticsearch.com/group/users/browse\_thread/thread/44e8e96420d78201/0275c454ae80ad01?lnk=gst&q=data+center#0275c454ae80ad01](http://groups.google.com/a/elasticsearch.com/group/users/browse_thread/thread/44e8e96420d78201/0275c454ae80ad01?lnk=gst&q=data+center#0275c454ae80ad01)

Is this still on the slate for a future release?

Thanks,  
Bob

---

<div class="post-metadata">

**Author:** ![kimchy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/kimchy/32/44952_2.png) [@kimchy](https://discuss.elastic.co/u/kimchy)\
**Post date:** [May 4, 2011, 8:15pm UTC](https://discuss.elastic.co/t/datacenter-replication-failover/4349/2 "2011-05-04T20:15:56Z")

</div>

Yes, this is still planned for future release. Note, this solution is good for DCs (or sites) that have a speedy connection. For DCs that are connected over a slow network, a different solution will need to be implemented to support it in a built in fashion.  
On Wednesday, May 4, 2011 at 8:33 PM, Bob wrote:

> In March of last year there was discussion of supporting replication  
> across datacenters
> 
> - A single cluster that spans two data centers, with special  
> allocation strategy that make sure that a shard and its replica do not  
> exists on the same data center. And that read / search prefer "local"  
> data center shards then going to search on another data center.
> 
> [http://groups.google.com/a/elasticsearch.com/group/users/browse\_thread/thread/44e8e96420d78201/0275c454ae80ad01?lnk=gst&q=data+center#0275c454ae80ad01](http://groups.google.com/a/elasticsearch.com/group/users/browse_thread/thread/44e8e96420d78201/0275c454ae80ad01?lnk=gst&q=data+center#0275c454ae80ad01)
> 
> Is this still on the slate for a future release?
> 
> Thanks,  
> Bob

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 4:06am UTC](https://discuss.elastic.co/t/datacenter-replication-failover/4349/3 "2017-07-06T04:06:55Z")

</div>