# Policies

In order to enable snapshot management for VM you need to do the following steps:

Go to Snapshot SLAs under the Virtual Environment section and create a new Snapshot Management policy ![](/files/8UpBgHw6WYyaNZnhCTDS)

![](/files/5YEpCRAEYSbRfoko4KKU)

As well as other types of Policies, you'll also find 4 main sections here.

![](/files/AonQ2WeWXL1pwjh58klP)

## General

Under this section you can set up:

* Name of policy
* Switch on/off for auto remove non-present virtual environments
* Set priority for tasks

## Auto-assignment

In this section you can set up:

* Mode
  * Disabled
  * Assign only
  * Assign and remove
* Include or exclude rules based on hypervisor tag's or regular expression matching VM name:
  * regular expression examples:
    * `.*` match any character any number of times
    * `vm-[0-9][0-9][0-9]` - match the name that starts with `vm-` and 3 digits
    * `(prod|uat|dev)-[0-9][0-9][0-9][a-z]?` - match the name that starts with `prod` or `uat` or `dev` prefix, then `-`, then 3 digits and optional lower-case letter (matching is case-sensitive)
  * exclude rules always take precedence over include rules
  * VMs may not be reassigned to the different policies if they already have a matching policy assigned
  * VMs may be reassigned to the different policy only if the mode is `Assign and remove`, current policy assignment rules don't match, and other's policy rules match
  * rules are joined with OR operator, so
    * if **any** rule (tag or matched regular expression) excludes VM - it will be excluded
    * if **no** rule (tag or matched regular expression) excludes VM, and **any** rule (tag or matched regular expression) includes VM - it will be included
* You can also select clusters to match only VMs that belong to them

## Virtual Environments

In this place, you can select virtual machines manually in a simple way.

## Rule

Provide retention settings - how many snapshots (created by this policy) will be kept and for how long. If you have already created a schedule, you can also select it.

{% hint style="info" %}
**Note:** You can also perform the same action thanks to the CLI interface: [CLI Reference](/administration/cli-reference.md)
{% endhint %}


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