Create a storage volume in public cloud

To create a new storage volume:

1. Select the virtual datacenter
2. Click the + add button and complete the form:

Create a storage volume in Amazon

Create a storage volume in Google Cloud Platform

For more details see GUI Create volume Storage Public

After you create the volume, to attach it to a VM

1. Go to Virtual datacenters and edit the VM
2. Go to Storage and drag a volume into the storage pane. See VM storage