Expanding the Local Disks of a Disk-intensive ECS
Scenarios
Disk-intensive ECSs can use both local disks and EVS disks to store data. Local disks are generally used to store service data and feature higher throughput than EVS disks.
Disk-intensive ECSs do not support specifications modification. When the capacity of local disks is insufficient, you can create a new disk-intensive ECS with higher specifications for capacity expansion. The data stored in the original ECS can be migrated to the new ECS through EVS.
Procedure
- Create an EVS disk according to the volume of data to be migrated.
- Attach the EVS disk created in 1 to the disk-intensive ECS for which you want to expand the capacity.
- Back up local disk data.
Back up the data stored in the local disks to the EVS disk that is newly attached to the disk-intensive ECS.
- For Windows ECSs, directly copy the data to be backed up to the EVS disk.
- For Linux ECSs, run the cp command to copy the data to be backed up to the EVS disk.
- Detach the EVS disk from the ECS.
- On the Elastic Cloud Server page, select this disk-intensive ECS and ensure that it has been stopped.
If the ECS is running, choose More > Stop to stop the ECS.
- Click the name of the disk-intensive ECS to go to the ECS details page.
- Click the Disks tab. Locate the row containing the EVS data disk and click Detach to detach the disk from the ECS.
- On the Elastic Cloud Server page, select this disk-intensive ECS and ensure that it has been stopped.
- Prepare a new disk-intensive ECS with higher specifications and larger capacity than the original one.
Ensure that the local disk capacity can meet your requirements.
- Attach the EVS disk to the new disk-intensive ECS.
On the Elastic Cloud Server page, click the name of the ECS described in step 5 to view details.
- Click the Disks tab. Then, click Attach Disk.
In the displayed dialog box, select the EVS disk detached in step 4 and the device name.
- Migrate the data from the EVS disk in 7 to the local disks of the new disk-intensive ECS.
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