# Attach Volume/Block Storage to Instance
When you attach a volume to an instance, you assign a persistent block storage to the instance. All data stored on persistent storage is independent of the existence of the instance.
If something goes wrong with the instance, the data on the volume remains unaffected. You may spawn a new instance of the same type and attach the volume to the new instance, to access the data on the volume.
You must be a self-service user or an administrator to perform this operation.
To attach a volume to an instance, follow the steps given below.
1\. Log in to Clarity.
2\. Click Instances in the left panel.
3\. Select the checkbox for the instance to which you want to attach a volume.
4\. Click More>Manage Volumes on the toolbar seen above the list of instances.
5\. Click Detached for the volume you wish to attach.
6\. Click Update Volumes.
You are now ready to deploy applications on the instance.
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