Block Storage FAQ

Which virtualization technology does IONOS use?

IONOS systems are built on Kernel-based Virtual Machine (KVM) hypervisor and libvirt virtualization management. We have adapted both of these components to our requirements and optimized them for the delivery of diverse cloud services, with a special focus on security and guest isolation.

Which images can I import?

Some software images are only designed for certain virtualization systems. Without VirtlO drivers, VM will not work properly with the hypervisor. You can set the storage bus type to IDE temporarily to install the VirtlO drivers.

How do I install VirtIO drivers for Windows?

For a Windows VM to work properly with our hypervisor, VirtI/O drivers are required.
  • Install Windows using the original IDE driver
    You can now install the VirtIO drivers from the ISO provided by IONOS.
  • Add a CD-ROM drive to your server
  • Select the windows-virtio-driver.iso ISO
  • Boot from the selected ISO to start the automatic installation tool
    You can now switch to VirtIO.

Can I run a virtualization platform on a virtual server?

Our hypervisor informs the guest operating system that it is located in a virtualized environment. Some virtualized systems do not support virtualized environments and cannot be executed on an IONOS virtual server. We generally do not recommend using your own virtualization technology in virtual hosts.

How do I upload my own images with FTP?

You can upload your own images to the FTP server in your region. The available regions are:
Frankfurt am Main (DE):
Karlsruhe (DE):
Berlin (DE):
London (GB):
Las Vegas (US):
Newark (US):
Logroño (ES):
FTP addresses are listed in the DCD:
Menu Bar > ? (Help) > FTP Upload Image
Menu Bar > Image Manager > FTP Upload Image
See also: Uploading an image

Why can I not select the images I uploaded?

Your own images are only available in the region where you uploaded them. Accordingly, only images located in the same region as the virtual data center are available for selection in a virtual data center. For example, if you upload an image to the FTP server in Frankfurt, you can only use that image in a virtual data center in Frankfurt.

Can I use an encrypted connection for FTP uploads?

We strongly recommend that you select FTPS (File Transfer Protocol with Transport Layer Security) as the transfer protocol. This can easily be done using "FileZilla", for example. Simple FTP works as well, but your access data is transmitted in plain text.

Why are image files in the FTP account 0 bytes in size?

After a file has been uploaded to the FTP server, it is protected from deletion, converted, and then made available as an image. When this process is finished, the file size is reduced to 0 bytes to save space but left on the FTP server. This is to prevent a file with the same name from being uploaded again and interfering with the processing of existing images. If an image is no longer needed, please contact the IONOS enterprise support team.

How do I delete snapshots?

Snapshots that you no longer need can be deleted in the Image Manager.
See also: Deleting a snapshot

Which images support Live Vertical Scaling (LVS)?

Live Vertical Scaling is supported by all our images. Please note that the Windows OS only allows CPU core scaling.

Can I connect one storage device to multiple servers?

It is not possible to connect multiple servers to one storage device, but you can connect multiple servers in a network without performance loss.

Which image types are supported?

For VMware images, note that VMFS is currently only supported in version 2. Version 3 is not supported. The volumes must have a fixed size. Dynamic data carriers cannot be imported. Appliance formats (OVF) are not supported. Corresponding files are not imported. Please note that VHD images should be smaller than 125 GB for reading. You can, however, enlarge them later according to your needs.
IONOS supports the following image types:
  • ISO 9660 CD-ROM
  • VMware Disk Image
  • QEMU QCOW Image
  • Microsoft Disk Image
  • VirtualBox Disk Image
  • UDF Image
  • RAW Disk Image
  • Parallels Disk Image

How do I change the Availability Zone of a storage device?

Once a storage device is provisioned, it is not possible to change its Availability Zone. You could, however, create a snapshot and then use it to provision a storage device with a new Availability Zone.
Last modified 9d ago