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    :Create a cloud disk

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    :Create a cloud disk

    Last Updated:Dec 16, 2024

    You can create a new pay-as-you-go cloud disk and attach the disk to an RDS Custom instance to increase the storage capacity of the instance. This topic describes how to create a cloud disk.

    Limits

    The following table describes the limits imposed on the cloud disks that use different billing methods.

    Disk type

    Limit

    Pay-as-you-go disk

    Billing begins when the cloud disk is created and ends when the cloud disk is released.

    Subscription disk

    • You cannot separately create a subscription cloud disk. You can create a subscription cloud disk only when you create an RDS Custom instance. After the creation, you must attach the cloud disk to the subscription instance.

    • You cannot separately detach or release subscription disks. Subscription disks expire and are released together with the RDS Custom instances to which they are attached.

    Cloud disks are independent of each other and cannot be merged by formatting the disks. Before you create cloud disks, we recommend that you determine the number and capacity of disks that you need based on your business requirements.

    Procedure

    This section describes how to create a cloud disk on the Storage and Snapshots page.

    Note

    You can also create a cloud disk on the Storage Information page of the instance. On the Instances page, you can click the ID of the required RDS Custom instance. In the left-side navigation pane of the page that appears, click Storage Information and click Create Cloud Disk.

    1. Log on to the ApsaraDB RDS console. In the left-side navigation pane, choose RDS Custom > Storage and Snapshots.

    2. On the Custom Disk tab, click Create Cloud Disk.

    3. In the dialog box that appears, configure the following parameters.

    4. Confirm the parameter settings and fees and proceed as prompted to create the cloud disk.

      Parameter

      Description

      Attached to Instance

      Specify whether to attach the cloud disk that you want to create to an RDS Custom instance.

      Set the value to No.

      Region

      Specify the region of the new cloud disk.

      To use the new cloud disk, you must attach the disk to the RDS Custom instance. The disk and the RDS Custom instance must reside in the same zone. Proceed with caution when you configure the Region and Zone parameters.

      Zone

      Specify the zone of the new cloud disk.

      Billing Method

      Set the value to Pay-as-you-go.

      Cloud Disk

      Select a disk category and specify the disk capacity.

      • The instance uses only Enterprise SSDs (ESSDs).

      • You can select a performance level (PL) based on the capacity of an ESSD. The performance of an ESSD varies based on the capacity and PL of the ESSD. For more information, see ESSD overview.

      • ESSD PL0, ESSD PL1, ESSD PL2, and ESSD PL3 are supported.

      Name

      Specify the name of the cloud disk. This parameter is optional.

      Description

      Specify the description of the disk. This parameter is optional.

      After a cloud disk is created, you can view it on the Custom Disk tab. However, the cloud disk cannot be directly used on RDS Custom instances.

    5. To directly use the new cloud disk, attach the disk to the RDS Custom instance. For more information, see Attach a cloud disk to an instance.

    Related API operation

    You can also call the CreateDisk operation to create a data disk. For more information, see CreateDisk.