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Pricing Details

HUAWEI CLOUD Document Database Service (DDS) provides different DB instance types, including replica set, single node, and cluster. These instances are charged on a pay-per-use basis and there are no minimum usage requirements.

Billing Items

The DDS price is the sum of the node costs and the storage space costs.

Table 1 Description

Item

Description

DB instance
  • The DDS price depends on the DB instance specifications (including three DB instance types: single node, replica set, and cluster).
  • DDS provides yearly/monthly and pay-per-use (hourly) billing modes.
  • You are charged for the storage space you selected.

Database storage

Storage space is charged on the capacity you selected.

Backup storage (optional)

DDS backup data is stored on OBS. After you purchase the instance storage space, DDS will additionally provide the same backup storage space. For example, if you purchase 100 GB of instance storage space, you will obtain 100 GB of backup storage space. If the size of backup data does not exceed 100 GB, the backup data is stored on OBS free of charge. If the size of the backup data exceeds 100 GB, you will be charged based on the OBS billing rules.

Public network traffic

DDS DB instances are accessible from the public network and you are charged for the public network bandwidth usage. However, you will not be charged for the private network bandwidth usage.

For details, see Product Pricing Details. You can use the DDS price calculator to quickly obtain an estimate price of a DB instance with the specifications you select.

Billing Modes

DDS provides two billing modes: pay-per-use and yearly/monthly. Pay-per-use is recommended if you are unsure of your future service needs and want to avoid paying for unused resources. However, if you are sure of your needs, yearly/monthly will be less expensive.

Configuration Changes

  • Adding DB instances: You can add instances to address growing service requirements. After the instances are added, you will be charged based on the new number of instances. The number of cluster instances can only be increased. The number of mongos nodes ranges from 2 to 32, the number of shard nodes ranges from 2 to 32, and the number of config nodes is 1 by default.
  • Scaling up storage space: You can change the storage space based on service requirements. After scaling the storage space, you will be charged based on the new storage space. Note that storage space cannot be scaled down.

Renewal

DDS supports the yearly/monthly and pay-per-use billing modes.

  • Pay-per-use: You are charged for a full hour regardless of whether you use the full or partial hour. You can use the service as long as your account balance is sufficient. If your account balance is insufficient, the service cannot be used normally. Top up your account in a timely manner.
  • Yearly/monthly: An upfront payment is required when you purchase the service. No additional fees are incurred during your usage.

To renew the subscription, go to the Renewals page.

Expiration and Overdue Payment

  • Service expiration

    If the purchased DB instance has expired, see Stopping Services and Releasing Resources in the Billing Center User Guide.

  • Arrears

    If the DB instance you purchased is in arrears, see Repaying Arrears in the Billing Center User Guide.