Scaling up Storage Space

Scenarios

If the original storage space is insufficient as your workloads grow, scale up storage space of your DB instance.

When the storage usage is greater than or equal to 97%, the DB instance status changes to Storage full. Your connection to the instance is intermittently interrupted and the instance becomes read-only. When this happens, data cannot be written to the instance.

A DB instance needs to preserve at least 15% of its capacity to work properly. The new minimum storage space required to make this instance available has been automatically calculated for you. You are advised to set alarm rules for the Storage Space Usage metric to learn about the storage usage in a timely manner.

Workloads are not interrupted during storage scale-up.

Constraints on Scale-up

• You can scale up storage space only when your account balance is greater than or equal to $0 USD.
• The maximum allowed storage is 4,000 GB. There is no limit on the number of scale-ups.
• For primary/standby DB instances, scaling up the primary DB instance will cause the standby DB instance to also be scaled up.
• A DB instance cannot be deleted during scale-up.

Billing

Scaling Storage Space

1. Log in to the management console.
2. Click in the upper left corner and select a region.
3. Click in the upper left corner of the page and choose Databases > TaurusDB.
4. On the Instances page, locate the target DB instance and choose More > Scale Storage Space in the Operation column.

   Or use either of the following methods:

   • Click the instance name to go to the Basic Information page. In the Storage & Backup area, click Scale Storage Space.
   • If the instance storage is full, locate the instance on the Instances page and click Scale in the Status column.

5. On the displayed page, specify the new storage space and click Next.

   You can increase or decrease the storage by at least 10 GB. Enter a value that is a multiple of 10. The instance supports a storage space range from 40 GB to 4,000 GB.

   The final storage space range on the console may differ slightly. It varies with the storage usage of the instance.

6. Confirm the information.
   • If you need to modify your settings, click Previous.
   • If you do not need to modify your settings, click Submit.

7. Check the results.

   Scaling up storage space takes 3 to 5 minutes. During the time period, the status of the instance on the Instances page will be Scaling up. After a while, click the instance name and view the new storage space on the displayed Basic Information page to verify that the scale-up is successful.