mirror of https://github.com/hashicorp/consul
30 lines
1.5 KiB
Markdown
30 lines
1.5 KiB
Markdown
---
|
|
layout: docs
|
|
page_title: Consul Enterprise Redundancy Zones
|
|
sidebar_title: 'Redundancy Zones'
|
|
sidebar_current: docs-enterprise-redundancy
|
|
description: >-
|
|
Consul Enterprise redundancy zones enable hot standby servers on a per
|
|
availability zone basis.
|
|
---
|
|
|
|
# Redundancy Zones
|
|
|
|
[Consul Enterprise](https://www.hashicorp.com/consul) redundancy zones provide
|
|
both scaling and resiliancy benefits by enabling the deployment of non-voting
|
|
servers alongside voting servers on a per availability zone basis.
|
|
|
|
When using redundancy zones, if an operator chooses to deploy Consul across 3 availability zones, they
|
|
could have 2 (or more) servers (1 voting/1 non-voting) in each zone. In the event that a voting
|
|
member in an availability zone fails, the redundancy zone configuration would automatically
|
|
promote the non-voting member to a voting member. In the event that an entire availability
|
|
zone was lost, a non-voting member in one of the existing availability zones would promote
|
|
to a voting member, keeping server quorum. This capability functions as a "hot standby"
|
|
for server nodes while also providing (and expanding) the capabilities of
|
|
[enhanced read scalability](/docs/enterprise/read-scale) by also including recovery
|
|
capabilities.
|
|
|
|
For more information, review the HashiCorp Learn guide on
|
|
[Redundancy Zones](https://learn.hashicorp.com/consul/day-2-operations/autopilot#redundancy-zones),
|
|
as well as the documentation for [Consul Autopilot](/docs/commands/operator/autopilot).
|