You can attach a storage plan to an Apsara File Storage NAS file system of the General-purpose type. You can create a file system before you purchase a storage plan or when you purchase a storage plan.

Purchase a storage plan

  1. Log on to the NAS console.
  2. Choose NAS > File System List, and click Purchase Storage Plan.
  3. On the Buy page, set the following parameters.
    Purchase a storage plan

    The following table lists the required parameters.

    Parameter Description
    Region The region to which the storage plan applies.
    Note You can attach a storage plan to a file system that resides only in the same region as the storage plan.
    Zone The zone to which the storage plan applies. Each region has multiple isolated locations known as zones. The power supply and network of each zone are independent. You can attach a storage plan to a file system that resides in a different zone from the storage plan.
    Protocol Type The protocol type. Valid values: NFS and SMB.

    The Network File System (NFS) protocol is applicable to file sharing among Linux Elastic Compute Service (ECS) instances. The Server Message Block (SMB) protocol is applicable to file sharing among Windows ECS instances.

    Storage Type The storage type. Valid values: Performance NAS and Capacity NAS.

    The maximum size of a NAS Performance file system is 1 PB. The maximum size of a NAS Capacity file system is 10 PB. The pay-as-you-go billing method is adopted.

    File System ID The ID of a file system. After a storage plan is purchased, you must attach the storage plan to a file system. Each file system can have only one storage plan attached. You can select the ID of an existing file system or select Create File System and Attach Storage Plan to create a file system.
    Capacity The capacity.

    If the used space of a file system exceeds the maximum capacity of the storage plan, the pay-as-you-go billing method is adopted. You can also upgrade the capacity of the storage plan. For more information, see Upgrade a storage plan.

    Quantity The number of storage plans.
    Subscription duration The duration.

    After a storage plan expires, the pay-as-you-go billing method is adopted. You can also renew a storage plan. For more information, see Renew a storage plan.

  4. Click Buy Now and follow the instructions to complete the payment.

    After the payment is complete, find the target file system, and view the details of the attached storage plan on the File System Details page.

FAQ

  • When will a storage plan take effect?

    A storage plan takes effect immediately after you complete the payment for the storage plan.

  • Can I refund a storage plan?

    Yes, you can refund only intact storage plans. To request a refund, submit a ticket to Alibaba Cloud Customer Service.

  • What will happen after a storage plan expires?

    If you fail to renew a storage plan after the storage plan expires, you are charged for extra space based on the pay-as-you-go billing method.

  • What will happen if the used space of a file system exceeds the maximum capacity of a storage plan?

    You are charged for extra space over the maximum capacity based on the pay-as-you-go billing method.

    For example, you purchase a storage plan of 100 GB. However, the used space exceeds 100 GB. You are charged for extra space over 100 GB once an hour based on the pay-as-you-go billing method.

  • Can I attach multiple storage plans to a file system?

    No, you can attach only one storage plan to each file system. If you require a storage plan with a higher specification or longer duration, you can Upgrade a storage plan the existing storage plan.

  • Is the capacity of a file system limited to the maximum capacity of a storage plan?

    No, the capacity of a file system is not limited to the maximum capacity of a storage plan. The pay-as-you-go billing method is adopted for extra space over the maximum capacity of a storage plan.

    For example, you create a Performance NAS file system that has a storage plan of 5 GB attached. The used space of the file system can still reach a maximum of 10 PB.

  • How can I detach a storage plan?

    After you attach a storage plan to a file system, you must delete the file system if you want to detach the storage plan.

  • How can I attach a storage plan to a different file system when the storage plan is already attached to a file system?

    After you attach a storage plan to a file system, you must delete the file system before you can attach the storage plan to a different file system.