• Relational Database Service

rds
  1. Help Center
  2. Relational Database Service
  3. User Guide
  4. Managing DB Instances
  5. Storage Space
  6. Scaling Up Storage Space

Scaling Up Storage Space

Scenarios

You can scale up storage space if it is no longer sufficient for your requirements.

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.

The DB instance is in Scaling up state when its storage space is being scaled up. For Microsoft SQL Server DB instances, backups are not supported during the scale-up process. For MySQL and PostgreSQL DB instances, backups are not affected.

NOTE:
  • You can scale up each DB instance a maximum of four times. Microsoft SQL Server DB instances can be scaled up an unlimited number of times.
  • For primary/standby DB instances, scaling up the primary DB instance will cause the standby DB instance to also be scaled up accordingly.
  • You cannot reboot or delete a DB instance that is being scaled up.
  • Storage space can only be scaled up, not down.
  • If you scale up a DB instance with disks encrypted, the expanded storage space will be encrypted using the original encryption key.

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 to go to the RDS console.
  4. On the Instance Management page, locate the target DB instance and click Scale in the Operation column.
  5. On the displayed page, click Storage Space, specify the desired storage space, and click Submit.

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

  6. View the scale-up result.

    Scaling up storage space takes 3-5 minutes. During this time, 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.

Scaling Up a Read Replica

NOTE:
  • Scaling up a read replica and primary DB instance do not affect each other.
  • Microsoft SQL Server does not support read replicas.
  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 to go to the RDS console.
  4. On the Instance Management page, locate the target DB instance and click next to it. Locate the read replica to be scaled and click Scale in the Operation column.
  5. On the displayed page, click Storage Space, specify the desired storage space, and click Submit.

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

  6. Confirm your specifications.
  7. View the scale-up result.

    Scaling up storage space takes 3-5 minutes. During this time, 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.