---
title: "Placement Groups"
sidebar_label: "Placement Groups"
sidebar_position: 1
description: "Placement policies for cloud servers in groups, restrictions on group creation, and pricing"
---

import Formbricks from '@theme/MDXComponents/Formbricks'

# Placement Groups

You can add a cloud server to a placement group. Servers in a group can be located on different physical hosts, which increases infrastructure fault tolerance.

A placement group is created for a specific [pool](/infrastructure/locations.mdx#pool). Note that cloud servers in a group can be located in different segments within the pool.

You can work with placement groups in the [control panel](https://my.selectel.ru/vpc/default/servers/), using [OpenStack CLI](/cloud-servers/tools/openstack-cli/) or [Terraform](/terraform/providers/).

## Placement policy \{#placement-policy}

When [creating a group](/cloud-servers/placement-groups/create-group.mdx), you can select a group policy — it determines how servers will be placed on physical hardware:

* preferably on different hosts (soft-anti-affinity) — the system will strive to place servers on different hosts. If there is no suitable host available when creating a server, it will be created on the same host;
* strictly on different hosts (anti-affinity) — servers in a group are always located on different hosts. If we do not find a suitable host, the server will not be created.

## Restrictions \{#limitations}

A group can only be created for a single [pool](/infrastructure/locations.mdx#pool).

In one [project](/access-control/projects/about-projects.mdx), you can create no more than 100 placement groups.

A single group can contain no more than 15 cloud servers at a time.

You can add a cloud server to a placement group only when [creating a cloud server](/cloud-servers/create/create-server.mdx).

## Pricing \{#price}

Creating a placement group is free of charge.

Only cloud servers included in the group and other [cloud platform resources](/access-control/projects/about-projects.mdx#selectel-products-that-support-projects) are charged[ according to the cloud platform payment model](/cloud-servers/about/payment.mdx#payment-model).

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