# Hibernate an Amazon EC2 instance
<a name="hibernating-instances"></a>

You can initiate hibernation on an On-Demand Instance or Spot Instance if the instance is an EBS-backed instance, is [enabled for hibernation](enabling-hibernation.md), and meets the [hibernation prerequisites](hibernating-prerequisites.md). If an instance cannot hibernate successfully, a normal shutdown occurs.

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#### [ Console ]

**To hibernate an instance**

1. Open the Amazon EC2 console at [https://console.aws.amazon.com/ec2/](https://console.aws.amazon.com/ec2/).

1. In the navigation pane, choose **Instances**.

1. Select an instance, and choose **Instance state**, **Hibernate instance**. If **Hibernate instance** is disabled, the instance is already hibernated or stopped, or it can't be hibernated. For more information, see [Prerequisites for EC2 instance hibernation](hibernating-prerequisites.md).

1. When prompted for confirmation, choose **Hibernate**. It can take a few minutes for the instance to hibernate. The instance state first changes to **Stopping**, and then changes to **Stopped** when the instance has hibernated.

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#### [ AWS CLI ]

**To hibernate an instance**  
Use the [stop-instances](https://docs.aws.amazon.com/cli/latest/reference/ec2/stop-instances.html) command and specify the `--hibernate` parameter.

```
aws ec2 stop-instances \
    --instance-ids i-1234567890abcdef0 \
    --hibernate
```

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#### [ PowerShell ]

**To hibernate an instance**  
Use the [Stop-EC2Instance](https://docs.aws.amazon.com/powershell/latest/reference/items/Stop-EC2Instance.html) cmdlet.

```
Stop-EC2Instance `
    -InstanceId i-1234567890abcdef0 `
    -Hibernate $true
```

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You can check whether hibernation was initiated on an instance.

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#### [ Console ]

**To view if hibernation was initiated on an instance**

1. Open the Amazon EC2 console at [https://console.aws.amazon.com/ec2/](https://console.aws.amazon.com/ec2/).

1. In the navigation pane, choose **Instances**.

1. Select the instance and, on the **Details** tab, in the **Instance details** section, check the value for **State transition message**.

   **Client.UserInitiatedHibernate: User initiated hibernate** indicates that you initiated hibernation on the On-Demand Instance or Spot Instance.

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#### [ AWS CLI ]

**To view if hibernation was initiated on an instance**  
Use the [describe-instances](https://docs.aws.amazon.com/cli/latest/reference/ec2/describe-instances.html) command and specify the `state-reason-code` filter to see the instances on which hibernation was initiated.

```
aws ec2 describe-instances \
    --filters "Name=state-reason-code,Values=Client.UserInitiatedHibernate"
```

The following field in the output indicates that hibernation was initiated on the On-Demand Instance or Spot Instance.

```
"StateReason": {
    "Code": "Client.UserInitiatedHibernate"
}
```

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#### [ PowerShell ]

**To view if hibernation was initiated on an instance**  
Use the [Get-EC2Instance](https://docs.aws.amazon.com/powershell/latest/reference/items/Get-EC2Instance.html) cmdlet and specify the `state-reason-code` filter to see the instances on which hibernation was initiated.

```
Get-EC2Instance `
    -Filter @{Name="state-reason-code";Value="Client.UserInitiatedHibernate"}
```

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