A volume is a detachable block storage device, similar to a USB hard drive. You can attach a volume to only one instance. Use the openstack client commands or the Web Interface to create and manage volumes.
Creating volume
Web Interface
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Log-in to the STFC cloud (https://openstack.stfc.ac.uk/)
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In the Web Interface, Go to Volumes -> Volumes
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Click on Create Volume
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Choose a name and size (in GiB)
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After creation, you will see the volume in the list
Command-Line
Refer to Using OpenStack Command-line Interface
Steps
Create simple volume
Run the following command in a OpenStack
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openstack volume create --size <size-in-GiB> <name> |
You can also snapshot a volume to act as a backup or template for creating new volumes.