Help Center/ TaurusDB/ User Guide/ HTAP Analysis (Standard Edition)/ Configuration Changes/ Changing Storage Space of a Standard HTAP Instance
Updated on 2025-08-21 GMT+08:00
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Changing Storage Space of a Standard HTAP Instance

Scenarios

After creating a standard HTAP instance, you can change storage space of BE and FE nodes as needed, even if the instance is abnormal.

If storage space of BE nodes is insufficient, you can use this function to directly scale up their storage space or add BE nodes. Once BE nodes are added, data will be automatically balanced among the new nodes. For details, see Adding Read Replicas to a Standard HTAP Instance.

Constraints

  • You cannot reboot or delete the HTAP instance while its storage space is being changed.
  • You can change storage space of an HTAP instance multiple times.
  • You can change storage space of BE and FE nodes separately or simultaneously.

Billing

Table 1 Billing

Billing Mode

Operation

Impact on Price

Yearly/Monthly

Storage scale-up

You need to pay for the difference in price based on the remaining period.

The following prices are for reference only. The actual prices are displayed on the console.

Suppose you purchased a one-month single standard HTAP instance with one BE and three FE nodes (specifications: 4 vCPUs | 16 GB; storage: extreme SSD, 50 GB) in CN-Hong Kong on April 1, 2025. The unit price of storage space is $0.448 USD/GB per month.

On April 15, 2025, you scaled up the storage space of BE nodes by 20 GB. The total storage space after the scale-up was 70 GB.

Price difference = Scale-up volume x Unit price x Remaining period

The remaining period is the remaining days of each calendar month divided by the maximum number of days in each calendar month.

In this example, the remaining period and price difference are calculated as follows: Remaining period = 15 (Remaining days in April)/30 (Maximum number of days in April) = 0.5. Price difference = 20 GB x $0.448 USD/GB x 0.5 = $4.48 USD

Pay-per-use

Storage scale-up

The new storage space is billed by hour. For details, see Product Pricing Details.

Procedure

  1. Log in to the management console.
  2. Click in the upper left corner and select a region and project.
  3. Click in the upper left corner of the page and choose Databases > TaurusDB.
  4. On the Instances page, locate a TaurusDB instance and click its name to access the Basic Information page.
  5. In the navigation pane, choose HTAP Analysis.
  6. Locate an HTAP instance and choose More > Change Storage Space in the Operation column.
  7. On the displayed page, set required parameters.

    Figure 1 Changing storage space

    Table 2 Parameter description

    Parameter

    Description

    Node Type

    You can select either BE nodes or FE nodes, or select both BE nodes and FE nodes.

    Backend Node Storage (GB)

    You need to set this parameter if BE is selected for Node Type. You can change storage space to up to 32,000 GB only by a multiple of 10 GB.

    Frontend Node Storage (GB)

    You need to set this parameter if FE is selected for Node Type. You can change storage space to up to 1,000 GB only by a multiple of 10 GB.

  8. Click Next.
  9. Confirm the information and click Submit.
  10. After the storage space is changed, view and manage it on the Basic Information page of the HTAP instance.
Parent Topic: Configuration Changes