# galera Master-Master cluster with cross sites replication

**URL:** <https://forums.percona.com/t/galera-master-master-cluster-with-cross-sites-replication/4279>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [June 27, 2015, 8:40pm UTC](https://forums.percona.com/t/galera-master-master-cluster-with-cross-sites-replication/4279 "2015-06-27T20:40:46Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sklam](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@sklam](https://forums.percona.com/u/sklam)\
**Post date:** [June 27, 2015, 8:40pm UTC](https://forums.percona.com/t/galera-master-master-cluster-with-cross-sites-replication/4279/1 "2015-06-27T20:40:46Z")

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hello  
I am running galera Master-Master cluster in one site with 3 master nodes. its version is 5.5 and it works fine.  
Now, I would replicate the data to another site. Its latency is around 20ms and i would not want to extend the existing cluster to the remote site.  
Any suggestion?  
thanks a lot

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**Author:** ![scott.nemes](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/scott.nemes/32/5_2.png) [@scott.nemes](https://forums.percona.com/u/scott.nemes)\
**Post date:** [June 28, 2015, 3:46pm UTC](https://forums.percona.com/t/galera-master-master-cluster-with-cross-sites-replication/4279/2 "2015-06-28T15:46:54Z")

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Hi sklam;

The typical solution would be to setup a slave cluster at the new site and connect it back to your master cluster / site via async replication (standard MySQL replication). That way you will have the copy of your data at the new site for disaster recovery / failover purposes without any performance hit on your master cluster.

-Scott

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**Author:** ![sklam](https://avatars.discourse-cdn.com/v4/letter/s/958977/32.png) [@sklam](https://forums.percona.com/u/sklam)\
**Post date:** [July 5, 2015, 9:50pm UTC](https://forums.percona.com/t/galera-master-master-cluster-with-cross-sites-replication/4279/3 "2015-07-05T21:50:36Z")

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Hi Scott  
Thanks for the suggestion 🙂 . We are trying to deploy this way.

Besides, just wonder gmcast.segment in Galera 3 could help on this case?

Thanks again.

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**Author:** ![scott.nemes](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/scott.nemes/32/5_2.png) [@scott.nemes](https://forums.percona.com/u/scott.nemes)\
**Post date:** [July 6, 2015, 11:32am UTC](https://forums.percona.com/t/galera-master-master-cluster-with-cross-sites-replication/4279/4 "2015-07-06T11:32:01Z")

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Hi sklam;

I could not comment on Galera/XtraDB Cluster specifics as I do not use it myself, but hopefully one of the Percona people who know it well can help you out. =)

-Scott