Attaching versus mounting in Cloud Block Storage

  • Last updated on: 2016-01-22
  • Authored by: David Hendler

In Cloud Block Storage you both attach and mount a Volume to a Server. These terms might sound similar, so it can get confusing as to their differences.

Attach: When you attach a Cloud Block Storage Volume to a server, a logical connection is created from a Cloud Block Storage node to the hypervisor hosting your cloud server. This is done over a network link via the iSCSI protocol. The new Volume gets exposed as a virtual device to the host. To your Cloud Server, the Volume appears as a new raw storage device. Attaching a Cloud Block Storage Volume can be accomplished via the API or through Control Panel.

Mount: Mounting is generally done once a volume has been attached and formatted for use by a computer’s operating system. Mounting is the process in which a user instructs the operating system how to logically map the directory structure to a physical storage device. You can only mount a volume through the computer’s operating system.

For more information on how to mount your volume, see Prepare your volume.

Continue the conversation in the Rackspace Community.