Changing the Storage Type

Scenarios

To improve storage performance of your RDS DB instance, you can change its storage type as needed.

Constraints

• To change a storage type, contact customer service.
• The storage type can only be upgraded, but not downgraded.
• Both ultra-high I/O and cloud SSD can be changed to extreme SSD.
• If the storage type of a read replica is different from that of its associated DB instance, the data synchronization may be affected. To change the storage type of a DB instance, change that of its read replica (if any) first to ensure that the storage type of the read replica is the same as that of the DB instance.
• Changing the storage type may affect storage performance, so the storage type should be changed during off-peak hours.
• Changing a storage type takes several minutes or even hours, depending on the throughput, storage space, original storage type, and new storage type.

Procedure

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 > Relational Database Service.
4. On the Instances page, locate the target DB instance and choose More > Change Instance Class in the Operation column.

   Alternatively, click the instance name to go to the Overview page. Under Instance Class, click Configure.

5. On the displayed page, select a new storage type and click Next.
   Figure 1 Changing the storage type
   

6. Confirm the new storage type.
   • To modify your settings, click Previous.
   • For pay-per-use DB instances, click Submit.
   • For yearly/monthly DB instances, click Pay Now. The change starts only after the payment is successful.

7. Check the result.

   Return to the Instances page. After a few minutes, click the instance name and check the new storage type on the displayed Overview page.