You can create a cloud disk to work as a data disk in the ECS console or by using the API. This article introduces how to create a new empty cloud disk in the ECS console.


Before you create a cloud disk, consider the following:

  • Only Pay-As-You-Go cloud disks can be created in this way, and they can be used as data disks only.
    Note You can create cloud disks as data disks when creating an ECS instance.  Those disks have the same billing method of the instance.
  • You can create a new empty cloud disk or create a cloud disk from a snapshot.
  • The quota of the Pay-As-You-Go cloud disks that are used as data disks of each account in all regions is five times than that of the Pay-As-You-Go instances. For more information, see limits.
  • Currently, you cannot merge multiple cloud disks. After cloud disks are created, they are independent from each other, and you cannot merge their space by formatting.  We recommend that you determine the number of disks and disk sizes required for your business before you create cloud disks.
  • Because you can create a snapshot for a single cloud disk, we do not recommend that you create LVM (Logical Volume Manager) volumes as the volumes may result in data loss if you use the snapshot to roll back the cloud disk.
  • You can convert a Pay-As-You-Go billed cloud disk to Subscription as follows:
  • If a cloud disk is created in this way, and its billing method is retained as Pay-As-You-Go, you can detach a cloud disk and release a cloud disk at any time.


If you want to attach a cloud disk to an instance, make sure they are in the same region and zone.


  1. Log on to the ECS console.
  2. In the left-side navigation pane, select Block Storage > Disks.
  3. In the upper-right corner of the Disks list page, click Create Disk to go to the Create page.
  4. Select the target region and zone.
    Note If you want to attach the cloud disk to an ECS instance, they must be in the same zone and the same region.
  5. Select a cloud disk category and specify the disk size and the quantity. You can also select create a cloud disk from a snapshot.
  6. Confirm the configuration and the Total cost.
  7. Click Preview, confirm you order, and click Create.

After you complete the payment, return to the Disks page and refresh it. The new disk is displayed and its status is Available.

Additional operations

Attach a cloud disk.

Related APIs

To create a disk after creating an instance, see CreateDisk.

To create a cloud disk when creating an instance, see RunInstances or CreateInstance.