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How to order an additional disk and use it in ESXi as datastore

Reviewed on 28 September 2021Published on 21 January 2020
  • compute
  • server
  • esxi
  • data
  • storage
  • harddisk
  • disk
  • additonal

Additional disks with ESXi hypervisor - Overview

On Scaleway Dedibox, you can order as many additional disks as you need. They can then, for instance, be used as additional Datastore in ESXi to store your virtual machines.

A range of different SATA, SAS, and SSD disks is available. Depending on the server chassis, the number of available slots may differ.

This guide explains how to order an additional disk from the Dedibox console and how to use it as datastore in a local ESXi environment by following these steps:

Note that instead of adding additoonal disks to your server, you can also use remote storage based on our RPN-SAN product to add an additonal datastore to your ESXi host.


Ordering an additional disk

  1. Connect to the Dedibox Console.

  2. Click Server -> Server list to see the list of your Scaleway Dedibox dedicated servers.

  3. Select the Dedibox to configure from the list and click Manage

  4. Click Customize in the side menu:

  5. Choose either an USB disk or an Internal disk for your server. The displayed setup cost is a one-time fee billed for the physical installation of the disk in the chassis.


    For optimal performance it is recommended to use an internal disk as datastore.

  6. Choose the payment method for the installation fees and validate your order:


    The disk will be installed within approximately one hour from the moment you placed the order.

  7. Connect to the ESXi web interface at https://your_scaleway_dedibox_ip/ and log in:

    The ESXi Dashboard displays.

  8. Click Storage to enter the storage section.

Creating a virtual disk from the iDRAC interface on a hardware RAID

Depending on the configuration of your Dedibox, it may come with a hardware RAID. On this type of server you can not configure the datastore directly from ESXi. Instead, you must create a virtual disk from the KVM-over-IP interface of the server before adding the disk to ESXi. To do so, follow these steps:


If you find that the newly installed disk does not appear in your ESXi web interface after installation, it may be the case that your server has a hardware RAID.

If your Dedibox uses a software RAID, you will see the disks listed directly. If this is the case, you can skip to the next part of this tutorial

  1. Launch an iDRAC session from the server details overview in the Dedibox Console:

  2. Log into iDRAC using the credentials available from the KVM over IP page of the Dedibox Console.

  3. Click Physical Disks to verify that the disk is physically available:

    A list of all installed disks and their status displays at the bottom of the page.

  4. Check that all disks are OK, and click Virtual Disks in the side-menu.

    The list of all existing virtual disks displays.

  5. Click Create in the menu bar to create a new virtual disk.

  6. Select the newly installed disk from the list. You can keep the default parameters for a basic configuration, or fine-tune them towards your needs.

  7. Click Create Virtual Disk to schedule the creation of a new virtual disk, usable for ESXi during the next reboot.

  8. Click Overview in the side-menu to go back to the home page of iDRAC, then click Power Cycle System (cold boot) to reboot the machine. The virtual disk will be configured during the boot process.


    Your machine will be unavailable during the creation of the new virtual disk. It is recommended to launch the reboot during the hours of low load on your machine.

  9. After reboot the new virtual disk shows up in the list of available disks in ESXi:

Adding the disk as new datastore to ESXi

When adding the disk as a new datastore, it will be formatted and available to store virtual machine images. You can decide on which datastore of the server you want to store the machine images. This can be useful if you have both HDD and SSD storage and you need different specifications either performance or storage wise.

  1. Click New Datastore on the storage dashboard of the vSphere web client:

  2. Select the option Create new VMFS datastore and click Next:

  3. Select the device from the list of available devices and enter a name for the new datastore. Then click Next:

  4. Select the partionning options. To use the full disk as datastore, choose Use full disk, then click Next:

  5. A summary displays. Click Finish to complete the wizard.


    All existing data on the disk will be overwritten. Make sure that you have a backup of your data before launching the last step.

Increase the size of an existing datastore

It is also possible to increase the size of an existing datastore. In this case the capacity of the newly installed disk will be added to the main datastore of the server which can be useful to extend storage capacity for large virtual machines.

  1. From the storage dashboard of the vSphere web client, click New Datastore:

  2. Select the option Increase the size of an existing VMFS datastore and click Next:

  3. Select the datastore to extend from the list and confirm by clicking on Next:

  4. Select the disk to add to the datastore:

  5. Choose the partitioning for the disk. To use all available disk space, go with the default settings and click Next:

    The summary displays.

  6. Check the summary settings and click Finish:

The disk is added to the datastore and the total storage capacity of the datastore is increased.

For more information regarding the management of your virtual machines using the ESXi hypervisor, refer to our dedicated documentation.