Scaling Up Storage Space¶
Scenarios¶
As more data is added, your GaussDB instance may start to run out of space. If the kernel system detects that the disk usage exceeds 85%, the instance is set to read-only and no data can be written to the instance. This section describes how to scale up the storage space of a DB instance. Services are not interrupted during storage scale-up.
Precautions¶
Within the maximum allowed range, usage cannot exceed 85% of the total storage after the scale-up.
If any node becomes faulty, contact the O&M engineers for troubleshooting before the scale-up.
The storage space must be a multiple of (Number of shards x 40 GB).
Constraints¶
The maximum allowed storage is 4 TB. There is no limit on the number of scale-ups.
The DB instance is in Scaling up state when its storage space is being scaled up and the backup services are not affected.
Reboot is not required when the instance is being scaled up.
You cannot reboot or delete an instance that is being scaled up.
Storage space can only be scaled up, not down.
Procedure¶
Log in to the management console.
Click
in the upper left corner and select a region and project.Click
in the upper left corner of the page and choose Databases > GaussDB. The GaussDB console is displayed.On the Instances page, locate the instance you want to scale up and click More > Scale Storage Space in the Operation column.
Alternatively, click the instance name to go to the Basic Information page. In the Storage/Backup Space area, click Scale.
On the displayed page, specify the new storage space and click Next.
When you scale up storage space, ensure that the usage of the new storage space is less than 85%. Once the storage usage of a DB instance reaches 85% or higher, the instance cannot process write operations and becomes read-only.
Confirm settings.
If you need to modify your settings, click Previous.
If your settings are correct, click Submit.
View the results.
During the scale-up, the status of the instance on the Instances page is Scaling up. This process may take 3 to 5 minutes. Once the scaling is complete, click the instance name to go the Basic Information page and you can see the new storage space.