Scaling Up Storage Space

Scenarios

You can scale up storage space if it is no longer sufficient for your requirements. If the DB instance status is Storage full and data cannot be written to databases, you need to scale up storage space.

For details about the causes and solutions of insufficient storage space, see section What Should I Do If My Data Exceeds the Database Storage Space of an RDS DB Instance?

RDS allows you to scale up storage space of DB instances but you cannot change the storage type. During the scale-up period, services are not interrupted.

Scaling Up a Primary DB Instance

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click Service List. Under Database, click Relational Database Service. The RDS console is displayed.
4. On the Instance Management page, locate the target DB instance and choose More > Scale Storage Space in the Operation column.

   You can also perform the following procedure to scale up storage space:

   • Click the target DB instance to enter the Basic Information page. In the Storage Space area, click Scale.

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

   The minimum start value of each scaling is 10 GB. A read replica can be scaled up only by a multiple of 10 GB. The allowed maximum storage space is 4,000 GB.

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

7. View the scale-up result.

   Scaling up storage space takes 3-5 minutes. During the time period, the status of the DB instance on the Instance Management page will be Scaling up. Click the DB instance and view the utilization on the displayed Basic Information page to verify that the scale-up is successful.

   If the DB instance is running the MySQL DB engine, you can view the detailed progress and result of the task on the Task Center page. For details, see section Task Center.

Scaling Up a Read Replica

Scaling up the storage space of a read replica does not affect that of the primary DB instance. Therefore, you can separately scale read replicas to meet service requirements. New storage space of read replicas after scaling up must be greater than or equal to that of the primary DB instance.

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click Service List. Under Database, click Relational Database Service. The RDS console is displayed.
4. On the Instance Management page, locate the target DB instance and click in front of it. Locate a read replica to be scaled and choose More > Scale Storage Space in the Operation column.

   You can also perform the following procedure to scale up storage space:

   • Click the target DB instance to enter the Basic Information page. In the Storage Space area, click Scale.

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

   The minimum start value of each scaling is 10 GB. A read replica can be scaled up only by a multiple of 10 GB. The allowed maximum storage space is 4,000 GB.

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

7. View the scale-up result.

   Scaling up storage space takes 3-5 minutes. During the time period, the status of the read replica on the Instance Management page will be Scaling up. Click the read replica and view the utilization on the displayed Basic Information page to verify that the scale-up is successful.

   If the read replica is running the MySQL DB engine, you can view the detailed progress and result of the task on the Task Center page. For details, see section Task Center.