What are the maximum resources available for a VM?


Virtual server configurations are subject to the following limits, according to the CPU type:

  • AMD CPU: Up to 62 cores and 240 GB RAM

  • Intel® CPU: Up to 27 Intel® cores and 120 GB RAM

A single Intel® physical core with Hyper-Threading Technology is exposed to the operating system of your virtual server as two distinct “logical cores”, which process separate threads.

HDD storage

  • Minimum: 1 GB

  • Maximum: 16 TB

SSD storage

  • Minimum: 100 GB

  • Maximum: 1 TB

Because the size of the working memory (RAM) cannot be processed during the initial configuration, newly provisioned servers with more than 8 GB of RAM may not start successfully when created from IONOS Windows images.

We recommend initially setting the RAM size to 8 GB; RAM size can then be scaled as needed after the initial provisioning and configuration.

What are the Availability Zones?

IONOS data centers are divided into separate areas (also known as "fire zones"), called Availability Zones.

You can enhance reliability and set up high-availability scenarios by deploying redundant virtual servers and storage devices across multiple Availability Zones.

How do I change the Availability Zone?

  • Select the server in the DCD Workspace

  • Use Inspector > Properties > Availability Zone menu to change the Availability Zone

What is Live Vertical Scaling?

Live Vertical Scaling (LVS) technology permits you to scale the number of CPU cores and amount of RAM while the server is running, without having to restart it. Please note that Windows only allows scaling the number of CPU cores, but not the amount of RAM. For scaling to more than eight CPU cores, Windows requires a reboot.

See also: Scale resources

How do I reboot a server?

Servers can be restarted at the operating system level (using the reboot command, for instance). You can also use the DCD reset function, which functions similarly to a physical server's reset button.

See also: Starting, stopping, rebooting a server

How do I shut down a server ?

You should use DCD to shut down your server completely. Your VM will then be marked as "shut down" in the DCD. Shutting down a VM at the operating system level alone does not deallocate its resources or suspend the billing.

See also: Starting, stopping, rebooting a server

How do I delete a server?

You can delete a server in the DCD Workspace by right-clicking it and selecting Delete, or by selecting (clicking) the server and pressing the Del key.

See also: Deleting a server

What do I do when my VM isn't accessible?

Try to connect to your VM using the Remote Console to see if it is up and running. If you have trouble logging on to your VM, please provide our support team with screenshots of error messages and prompts from the Remote Console.

  • Windows users: Please send us a screenshot of the Task Manager.

  • Linux users: Please send us the output of uptime and top.

How do I get the root/admin passwords with IONOS images?

When using IONOS-provided images, you set the passwords yourself prior to provisioning.

Why does my newly provisioned server not start?

Newly provisioned servers with more than 8 GB of RAM may not start successfully when created from IONOS Windows images, because the RAM size cannot be processed during the initial configuration.

An error is displayed according to the server version; for example, Windows Server 2012 R2 displays the following message:

"Windows could not finish configuring the system. To attempt to resume configuration, restart the computer."

We recommend initially setting the RAM size to 8 GB, and rescaling it as needed after the initial provisioning and configuration are complete.

Which CPU architecture should I choose?

The choice of CPU architecture primarily depends on your workload and performance requirements. Intel® processors are oftentimes more powerful than AMD processors. Intel® processors are designed for compute-intensive applications and workloads where the benefits of hyperthreading and multitasking can be fully exploited. Intel® cores cost twice as much as AMD cores. Therefore, it is recommended that you measure and compare the actual performance of both CPU architectures against your own workload. You can change the CPU type in the DCD or using the API, and see for yourself whether Intel® processors deliver significant performance gains, or more economical AMD cores still meet your requirements.

With our unique "Core Technology Choice" feature, we are the only cloud computing provider that makes it possible to flexibly change the processor architecture per virtual instance.

What do I do if the cursor in the Remote Console disappears?

When the cursor disappears after logging on to the Remote Console, you can reconnect to the server using the appropriate menu entry.