Attaching a Volume to an Existing Amazon EC2 Instance

From an Amazon EC2 instance backup, you can restore an instance volume and attach it to an existing instance.

Important

Commvault does not restore Amazon EBS gp3 IOPS values or throughput values. Default values are set by the restore operation. You can modify the default values after the restore is complete. The default IOPS value is 3000. The default throughput value is 125MB/s.

Prerequisites

If a passkey is configured for restores, you must have the passkey.

Procedure

From the Command Center navigation pane, go to Protect > Virtualization.

The OVerview page appears.
On the VM groups tab, in the row for the VM group, click the action button , and then click Restore.

The Select restore type page appears.
Click Attach volume.

The Attach volume page appears.
Select the volumes to restore, and then click Restore.

The Restore options dialog box appears.
From the Destination hypervisor list, select the AWS account where the instance that you want to attach the volume to resides.
For Access node, leave Automatic (the default value) selected, or select an access node or an access node group.
- For the best results, use the Automatic option because it does the following:
  - Selects the most appropriate access nodes.
    
    Potential for egress charges
    
    The Commvault software assigns the workload to access nodes as follows:
    
    1. To access nodes in the same AZ.
    
    2. If no access nodes in the same AZ are available, to access nodes in the same Region.
    
    3. If no access nodes in the same Region are available, to any available access node (which incurs egress charges).
  - Provides resiliency against access node failure (that is, if an access node fails during a restore, the software restarts the restore on other, available access nodes).
  - Distributes the workload across the access nodes that are assigned for the destination AWS account.
- If you select a specific access node or access node group, consider the following:
  - If you select an access node that is outside of AWS, the software uploads volume information to Amazon S3 and uses the volumes to create the EC2 instance.
  - If you select an access node group, the software distributes the workload across the access nodes that are available in the access node group.
Potential for egress charges

When you restore EC2 instances from an Amazon S3 library in one AWS Region to another Region, consider Amazon Virtual Private Cloud (VPC) egress costs. For more information, see Data Transfer on the Amazon EC2 On-Demand Pricing page in the AWS documentation.
In the Restore to existing instance box, select the instance to attach the restored volume to.
To specify a different name for the restored volume, in the Volume name box, enter the name.
Click Submit.