2017-05-05 05:24:04 +00:00
|
|
|
---
|
|
|
|
|
layout: "docs"
|
|
|
|
|
page_title: "Consul Enterprise Redundancy Zones"
|
|
|
|
|
sidebar_current: "docs-enterprise-redundancy"
|
|
|
|
|
description: |-
|
|
|
|
|
Consul Enterprise redundancy zones enable hot standby servers on a per availability zone basis.
|
|
|
|
|
---
|
|
|
|
|
|
|
|
|
|
# Consul Enterprise Redundancy Zones
|
|
|
|
|
|
|
|
|
|
[Consul Enterprise](https://www.hashicorp.com/consul.html) [redundancy
|
2017-05-06 20:26:30 +00:00
|
|
|
zones](/docs/guides/autopilot.html#redundancy-zones) make
|
2017-05-05 05:24:04 +00:00
|
|
|
it possible to have more servers than availability zones. For example, in an
|
|
|
|
|
environment with three availability zones it's now possible to run one voter and
|
|
|
|
|
one non-voter in each availability zone, for a total of six servers. If an
|
|
|
|
|
availability zone is completely lost, only one voter will be lost, so the
|
|
|
|
|
cluster remains available. If a voter is lost in an availability zone, Autopilot
|
|
|
|
|
will promote the non-voter to voter automatically, putting the hot standby
|
|
|
|
|
server into service quickly.
|
