# Cross data center Replication support

**URL:** <https://discuss.elastic.co/t/cross-data-center-replication-support/107326>\
**Category:** Elasticsearch\
**Created:** [November 13, 2017, 3:50am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326 "2017-11-13T03:50:10Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Anushke\_Hewawaithara](https://avatars.discourse-cdn.com/v4/letter/a/9de0a6/32.png) [@Anushke\_Hewawaithara](https://discuss.elastic.co/u/Anushke_Hewawaithara)\
**Post date:** [November 13, 2017, 3:50am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/1 "2017-11-13T03:50:10Z")

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Kindly let me know whether elastic search supports Cross data center Replication.

EX:- We need to keep one replica on our DR site

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 13, 2017, 5:56am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/2 "2017-11-13T05:56:22Z")

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Yes and No.  
It depends what you call a DC.

If you have network latency between both DC then the answer is « no. Not yet but this will come in the future. »  
If you have no latency between the 2 sites, then you can use allocation awareness to make sure replicas and primaries are correctly distributed.

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**Author:** ![Anushke\_Hewawaithara](https://avatars.discourse-cdn.com/v4/letter/a/9de0a6/32.png) [@Anushke\_Hewawaithara](https://discuss.elastic.co/u/Anushke_Hewawaithara)\
**Post date:** [November 13, 2017, 7:44am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/3 "2017-11-13T07:44:23Z")

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You mean both Data centers should be on same VLAN ?

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [November 13, 2017, 8:33am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/4 "2017-11-13T08:33:19Z")

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I mean a very low latency. It can be on different VLANs I suppose.

But what is the distance between your 2 DCs in your scenario? Just to understand exactly your question.

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**Author:** ![Anushke\_Hewawaithara](https://avatars.discourse-cdn.com/v4/letter/a/9de0a6/32.png) [@Anushke\_Hewawaithara](https://discuss.elastic.co/u/Anushke_Hewawaithara)\
**Post date:** [November 14, 2017, 4:02am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/5 "2017-11-14T04:02:47Z")

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our case its on different vlans.  
currently up to 10ms latency is there

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**Author:** ![jasontedor](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jasontedor/32/66992_2.png) [@jasontedor](https://discuss.elastic.co/u/jasontedor)\
**Post date:** [November 14, 2017, 5:03am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/6 "2017-11-14T05:03:20Z")

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We do _not_ currently support cross datacenter replication, although we are actively working on such a feature. Stay tuned.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [December 12, 2017, 5:03am UTC](https://discuss.elastic.co/t/cross-data-center-replication-support/107326/7 "2017-12-12T05:03:23Z")

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