This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
# AWS::EC2::Instance Volume

Specifies a volume to attach to an instance.
`Volume` is an embedded property of the [ AWS::EC2::Instance](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html) resource.
## Syntax

To declare this entity in your CloudFormation template, use the following syntax:
### JSON

```
{
 "[Device](#cfn-ec2-instance-volume-device)" : {{String}},
 "[VolumeId](#cfn-ec2-instance-volume-volumeid)" : {{String}}
}
```
### YAML

```
 [Device](#cfn-ec2-instance-volume-device): {{String}}
 [VolumeId](#cfn-ec2-instance-volume-volumeid): {{String}}
```
## Properties

`Device` 
The device name (for example, `/dev/sdh` or `xvdh`). 
*Required*: Yes 
*Type*: String 
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
`VolumeId` 
The ID of the EBS volume. The volume and instance must be within the same Availability Zone. 
*Required*: Yes 
*Type*: String 
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-ec2-instance-volume.md">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://docs.aws.amazon.com/AWSCloudFormation/latest/TemplateReference/aws-properties-ec2-instance-volume.md" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>