# Elastic Cloud availability zones

**URL:** <https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859>\
**Category:** Elasticsearch\
**Created:** [August 5, 2020, 11:47am UTC](https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859 "2020-08-05T11:47:13Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![liorg2](https://avatars.discourse-cdn.com/v4/letter/l/ed8c4c/32.png) [@liorg2](https://discuss.elastic.co/u/liorg2)\
**Post date:** [August 5, 2020, 11:47am UTC](https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859/1 "2020-08-05T11:47:13Z")

</div>

Hello,

In the cloud management when choosing , when choosing 2 availability zones,  
is the data replicated or splitted between data centers, but does it also mean, that both data centers are participating queries effort ?  
How exactly does it help in day to day please?

I guess that nodes are splitted between data centers.  
if that is true, is that slower than 1 data center? and also isn't that enough too have snapshots?

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac1248547c69652caf69a159fad9db7849e8875.png)

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [August 5, 2020, 9:16pm UTC](https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859/2 "2020-08-05T21:16:56Z")

</div>

Distributing a cluster across 2 or more availability zones increases resilience dnd availability as long as your indices are configured to have a replica. All data nodes will participate in indexing and querying which can lead to improved query performance. You can also have one come go down (had happened) and still have s a n available and functioning cluster. Snapshots are taken periodically which means you may lose data if you have to restore one. It is also not instantaneous so will lead to downtime.

---

<div class="post-metadata">

**Author:** ![liorg2](https://avatars.discourse-cdn.com/v4/letter/l/ed8c4c/32.png) [@liorg2](https://discuss.elastic.co/u/liorg2)\
**Post date:** [August 6, 2020, 6:21am UTC](https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859/4 "2020-08-06T06:21:03Z")

</div>

thanks @Christian_Dahlqvist  
is there a benefit in mutli az for ML nodes?

---

<div class="post-metadata">

**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [August 6, 2020, 7:24am UTC](https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859/5 "2020-08-06T07:24:21Z")

</div>

Yes, it improves reliability and availability.

---

<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:** [September 3, 2020, 7:24am UTC](https://discuss.elastic.co/t/elastic-cloud-availability-zones/243859/6 "2020-09-03T07:24:23Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.