# Setup Cluster across data centre
**URL:** https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968
**Category:** Elasticsearch
**Created:** [December 22, 2017, 8:30am UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968 "2017-12-22T08:30:22Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@Dhiraj\_Singh\_Chauhan](https://discuss.elastic.co/u/Dhiraj_Singh_Chauhan)
#### Post date: [December 22, 2017, 8:30am UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/1 "2017-12-22T08:30:22Z")
Hi Guys,
I am planing to create single cluster across data centre in case if my one data centre in down my application is in operation mode without any downtime.
My logical approach to create cluster is I will group node of different data centres in a group by specify the configuration in the elasticsearch.yml file.
Please let me know it is recommendable to or not? And what all the parameter I should take care before implementation like Bandwidth, open ports........
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [December 22, 2017, 9:53am UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/2 "2017-12-22T09:53:59Z")
How far apart are your data centres? What is the latency and bandwidth between them?
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### Author:  [@Dhiraj\_Singh\_Chauhan](https://discuss.elastic.co/u/Dhiraj_Singh_Chauhan)
#### Post date: [December 22, 2017, 10:02am UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/3 "2017-12-22T10:02:44Z")
HI Chris,
latency is less than 10ms and bandwidth is 2gb/s.
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [December 22, 2017, 10:32am UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/4 "2017-12-22T10:32:49Z")
Elasticsearch relies on low latency in order to operate properly, as indexing requests and queries will hit both “zones”. With 3 recommended master nodes it is also hard to make failover symmetrical.
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### Author:  [@Dhiraj\_Singh\_Chauhan](https://discuss.elastic.co/u/Dhiraj_Singh_Chauhan)
#### Post date: [December 22, 2017, 11:39am UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/5 "2017-12-22T11:39:27Z")
Thanks for your reply, Please let me know 10ms and bandwidth is 2gb/s good to go or not?
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [December 22, 2017, 1:24pm UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/6 "2017-12-22T13:24:32Z")
I do not know how it will work for your use case, so would recommend you test it.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 19, 2018, 1:24pm UTC](https://discuss.elastic.co/t/setup-cluster-across-data-centre/112968/7 "2018-01-19T13:24:57Z")
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