HP CloudSystem Foundation Podręcznik Użytkownika Strona 93

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Edit Volume Types
Use this procedure to edit volume types. After the volume type is edited, you can manage it from
the overview screen.
Prerequisites
Minimum required privileges: Infrastructure administrator
Procedure 46 Editing volume types
1. From the main menu, click Volume Types.
2. Click Actions Edit.
3. Edit the data. Select “Help on this page in the CloudSystem Console for more information.
4. To save the changes, click Save.
To exit the action without making changes, click Cancel.
5. Verify that each new volume type is displayed on the Volume Types overview screen.
Delete Volume Types
Use this procedure to delete Volume Types. After a volume type is deleted, it is removed from the
overview screen.
Prerequisites
Minimum required privileges: Infrastructure administrator
Procedure 47 Deleting volume types
1. From the main menu, click Volume Types.
2. Select the volume type you want to delete.
3. Click Actions Delete.
4. To confirm and delete volume type, click Yes, delete.
To exit the action without deleting the volume type, click Cancel.
5. With the filters set to All statuses and All driver types, verify that the volume type no longer
appears on the Volume Types overview screen.
About Volumes
Volumes provide persistent block storage for virtual machine instances. OpenStack technology
provides two classes of block storage: ephemeral storage and persistent volumes. Ephemeral
storage is assigned to a VM instance when the instance is created and then released when the
instance is deleted. All instances have some ephemeral storage.
When you create a VM instance, you select a predefined flavor. The definition of a flavor includes
the number of virtual CPUs, the amount of random access memory (RAM), and the amount of disk
space allocated for storage. Storage defined as part of the flavor definition is ephemeral.
Block storage volumes (also known as OpenStack Cinder volumes) persist as independent entities.
A block storage volume can exist outside the scope of a VM instance. Once created, a block
storage volume can be attached to one VM instance and later can be detached. The detached
block storage volume can then be attached to a different VM instance.
Managing Volumes
You perform most volume management tasks through the CloudSystem Portal or OpenStack API
and CLI (see Provision a cloud in Foundation (page 117) for more information). From the CloudSystem
Portal, you can create and delete volumes, and attach volumes to or detach volumes from VM
instances.
In addition to the details displayed on the Volumes overview screen, you can find other data in
the Volumes area of the CloudSystem Portal.
About Volumes 93
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