This topic describes how to manually scale up or scale down the storage capacity of a cluster.
Limitations
This feature is supported only for Enterprise Edition clusters that use the subscription billing method. It is not available for pay-as-you-go clusters.
You cannot downgrade the storage type of an existing cluster from PSL5 to PSL4.
You cannot scale down the storage capacity of a multi-master cluster.
You cannot scale down the storage capacity of a serverless cluster.
You cannot scale up storage capacity while a scale-down operation is in progress. Before scaling down, carefully assess your storage usage to ensure the new capacity will be sufficient.
Service impact
Scaling up storage capacity does not cause a service interruption.
Scaling down PSL4 or PSL5 storage does not cause a service interruption.
Manually scale up storage capacity
Procedure
Log in to the PolarDB console。
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In the upper-left corner, select the region where the cluster is deployed.
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Find the target cluster and click its ID.
On the Basic Information page, in the Distributed Storage section, click Change Storage Capacity > Manually Scale Up.
On the Change Configurations page, select the desired Storage Capacity, agree to the terms of service, and then click Buy Now.
On the Pay page, confirm the order and click Purchase.
Manually scale down storage capacity
Procedure
Log in to the PolarDB console。
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In the upper-left corner, select the region where the cluster is deployed.
-
Find the target cluster and click its ID.
On the Basic Information page, in the Distributed Storage section, click Change Storage Capacity > Manual Scale In.
On the Downgrade page, select the desired Storage Capacity, agree to the terms of service, and then click Buy Now.
Related topics
If your storage capacity is full, the cause is typically data files, temporary files, or binary logs. For solutions, see Common storage capacity issues and solutions.