Create a Volume

You can create a network volume together with an instance or create it separately and then attach it to an instance.

A local volume is created only when an instance is created.

A network volume can be created from different sources:

• Empty: Initially, this type of volume does not contain any data. You can use it to scale the storage space in an instance.
• From an image: Prepared by OneCloudPlanet or your own uploaded image. You can use this for replacing the boot volume during instance recovery or for cloning instances.
• From another volume, snapshot, or backup: To create a copy of an existing volume.

The cost of a network volume depends on its type. You can calculate the cost during instance creation.

Personal Area

On the OneCloudPlanet platform, you can change the instance type, which includes the number of processors (vCPU) and the amount of RAM.

1. Go to Volumes.

2. Click Create Volume.

3. Enter the volume name.

4. Select the volume source (ready-made image, your image, a volume, snapshot, or backup). If you need to create an empty volume, skip this step.

5. Choose the volume type. Volume differ in read/write speed and throughput values.

6. Specify the volume size in GB. The size of a volume created from a source should be equal to or greater than the source size. We recommend not exceeding the maximum volume size limits. After creating a volume, you won't be able to decrease its size directly.

7. Click Create.

Openstack CLI

Make sure the OpenStack client is installed and you can authenticate to use it. Execute the required command: Create a network volume:

    openstack volume create
    [--image <image> | --snapshot <snapshot> | --source <volume>] \
    --size <size> \
    --type <volume_type> \
    [--availability-zone <new_zone>] \
    <volume_name>

Specify the source type:

• --image <image> - to create a volume from an image. The <image> - parameter is the name or ID of the image, which you can view using openstack image list

• --snapshot <snapshot> - to create a volume from a snapshot. The <snapshot> - parameter is the name or ID of the snapshot, which you can view using openstack volume snapshot list

• --source <volume> - to create a volume from another volume. The <volume> - parameter is the name or ID of the volume, which you can view using openstack volume snapshot list

• --size <size> - volume size in GB. For volumes created from a source, the minimum size should be equal to the source size. Consider the volume limits for the maximum volume size;

• --type <volume_type> - volume type. volume types differ in throughput values and read/write speeds. You can view the available types using openstack volume type list

• --<volume_type> - volume name.