• Elastic Volume Service

evs
  1. Help Center
  2. Elastic Volume Service
  3. User Guide
  4. Management
  5. Expanding the Capacity of an EVS Disk
  6. Expanding an In-use EVS Disk

Expanding an In-use EVS Disk

Scenarios

Currently, disk capacities can only be expanded, but cannot be reduced.

Expanding an In-use disk means that the to-be-expanded disk has been attached to a server.

  • During such an expansion, the server containing the to-be-expanded disk must be in the Running or Stopped state.
  • Shared disks must be expanded when they are in the Available state. For details, see Expanding an Available EVS Disk.
  • Currently, only some server OSs support capacity expansion of In-use disks. For detailed descriptions, see the official document of the corresponding OS.

    If the server OS fails to meet the requirements, detach the disk and then expand its capacity. Otherwise, you may need to stop and then start the server after the expansion to make the expansion takes effect.

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner and select the desired region and project.
  3. Under Storage, click Elastic Volume Service.

    The disk list page is displayed.

  4. Determine whether to view the server information before expanding the EVS disk.

    • If you need to view the server information, perform the following procedure:
      1. In the EVS disk list, click the name of the to-be-expanded disk.

        The disk details page is displayed.

      2. Click the Attachments tab to view the server where the target disk has been attached.
      3. Click Expand Capacity in the upper right corner of the page.

        The expansion page is displayed.

    • If you do not need to view the server information, perform the following procedure:
      1. In the disk list, locate the row that contains the target disk and click Expand Capacity in the Operation column.

        The expansion page is displayed.

  5. Set the Add Capacity (GB) parameter as prompted and click Next.
  6. On the Details page, check the disk information again.

    • If you do not need to modify the specifications, click Submit to start the creation.
    • If you need to modify the specifications, click Previous to modify parameters.

    After the specifications are submitted, the disk list page is displayed.

  7. In the EVS disk list, view the capacity of the expanded disk.

    When the disk status changes from Expanding to In-use, the additional capacity has been added to the disk and the expansion succeeded.

    NOTE:

    If the expansion fails, customer service personnel will contact you and help you handle this error. Do not perform any operations on the disk before the customer service personnel contact you. If you require that the error be handled as soon as possible, contact our customer service personnel. The disk will no longer be charged once its status changes to Expansion failed.

  8. After the capacity expansion has succeeded, perform subsequent operations for the additional space.

    The operation method varies depending on the server OS.