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    ApsaraDB RDS:Change ESSD to Premium ESSD

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    ApsaraDB RDS:Change ESSD to Premium ESSD

    Last Updated:Jun 20, 2026

    With the I/O performance burst feature enabled, a Premium ESSD provides higher I/O capabilities during workload spikes without increasing storage capacity. This allows the disk's IOPS to exceed the standard limits, making it ideal for applications with bursty I/O patterns. You can upgrade an ESSD of any performance level (PL) to a Premium ESSD to enhance I/O performance. This topic describes how to change the storage type from ESSD to Premium ESSD.

    Prerequisites

    The storage type of your ApsaraDB RDS for MySQL instance is ESSD.

    Impacts

    The change from ESSD to Premium ESSD takes effect immediately. This process does not cause a connection drop and typically does not affect your services. In rare cases, the IOPS of the instance may fluctuate. Perform this operation during off-peak hours.

    Notes

    • Changing the storage type of an instance from ESSD to Premium ESSD affects all of its primary and secondary nodes (for RDS Cluster Edition), primary and secondary instances (for RDS High-availability Edition), and the primary instance (for RDS Basic Edition). However, this change does not affect the storage type of read-only instances that are attached to the primary instance. To change the storage type of a read-only instance, you must perform the operation on its details page.

    • You cannot make any other configuration changes in the same operation.

    • After you change the storage type to Premium ESSD, you cannot change it to any other storage type. Choose this storage type carefully.

    • Before you change the storage type from ESSD to Premium ESSD, ensure that no backup tasks are in progress for the instance. An ongoing backup can prolong the change process.

    Billing

    • ESSDs (PL1, PL2, and PL3) and Premium ESSDs are priced differently. The exact price difference is shown in the order details on the console when you make the change.

    • For workloads with short periods of high I/O activity, Premium ESSDs are more cost-effective than ESSDs at PL1, PL2, or PL3 over a given billing cycle.

    • Premium ESSD fee = Storage space fee + I/O performance burst fee + I/O acceleration fee + OSS fee for data archiving.

    Procedure

    1. Go to the ApsaraDB RDS Instances page, select the region in the top navigation bar, and then click the ID of the target instance.

    2. In the Basic Information section, click Storage Type next to Storage Type.

    3. On the Change Specifications page, select Premium ESSD for Storage Type. Read the Terms of Service and click Confirm Order.

      After you complete the payment, the instance enters the Upgrading state. When the status returns to Running, the upgrade is complete.

    FAQ

    • Q: Will changing the storage type from ESSD to Premium ESSD cause a connection drop?

      A: No. This change is immediate and does not cause a connection drop. Your services are usually unaffected. In rare cases, the IOPS of the instance may fluctuate. Perform this operation during off-peak hours.

    • Q: Is data copied when I change the storage type from ESSD to Premium ESSD?

      A: Yes, data is copied in the background. You can still access your data during this process. Perform this operation during off-peak hours.

    References and API