Choosing the disk group to install an operating system

Learn here how to choose a disk group to install your operating system

Last updated 23/11/2018


OVHcloud offers some Dedicated Servers that have one SATA disk group, and one SSD disk group. We call these "Hybrid Servers".

This guide will show you how to specify the disk group on which to install the server's operating system.


This procedure only works for Linux systems (except ESXi, and XenServer), and only for SoftRAID, NoRAID, or HardRAID (default only) configuration.


Step 1: Log in to the OVHcloud API.

Go to and click the Login in the top-right corner of the page. Then, on the following page, log in with the credentials of your OVHcloud account.

Step 2: Retrieve the server name.

Next, go to the following API call:

Next, retrieve the name of your hybrid server by clicking Execute:

Available services

Step 3: Retrieve the diskGroupId.

The diskGroupId is what will allow us to define the disk group on which we want the operating system to be installed.

Go to the following API call:

Enter the name of your server in the serviceName field, and click the Execute button. You will then see your server's hardware information. Note down the diskGroupId, which you will find in diskGroups.

By default, the operating system is installed on the diskGroupId 1.


Step 4: Start the installation.

Once you have the diskGroupId, you can proceed to the final step of installing your operating system.

To do this, go to the following API call to retrieve a list of compatible operating systems:

Compatible templates

Make a note of the template name for your chosen operating system, then go to the following API call:

Enter your server's reference into the serviceName field, enter the diskGroupId (2) into the diskGroupId field, and enter the template name into the templateName field (all other fields are optional).

When you have finished specifying your options, click the Execute button:


Your operating system will now be installed. You can check the progress of the installation by refreshing your server's page in the OVHcloud Control Panel, or by going to the following API call, entering your server's references into the serviceName field, and clicking the Execute button:

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