This topic provides answers to some frequently asked questions about the storage capacity of ApsaraDB RDS instances.

Can I expand the storage capacity of my RDS instance without data migration? What is the impact of an expansion?

If the host on which your RDS instance is deployed can provide sufficient storage, a data migration is not required. If the host cannot provide sufficient storage, ApsaraDB RDS creates an RDS instance with the required storage capacity on an eligible host that can provide sufficient storage and migrates the data of your RDS instance to the new RDS instance.

What are the billing rules for storage capacity expansions?

After you expand the storage capacity of your RDS instance, the fees that are charged to you change. For more information, see Billing details about configuration change.

How do I troubleshoot an abrupt increase in storage usage?

  1. Log on to the ApsaraDB RDS console and go to the Instances page. In the top navigation bar, select the region where your RDS instance resides. Then, find your RDS instance and click the instance ID.
  2. In the left-side navigation pane of the page that appears, click Monitoring and Alerts. On the page that appears, view the data types and trends of the occupied storage. 1

How do I release the occupied storage by deleting files?