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IBM Cloud virtual compute features
Use auto scaling to automatically grow or shrink your cloud environment — deploy additional virtual servers or cancel unneeded ones with minimal effort.
Security and compliance
IBM Cloud® Virtual Servers provide 24x7 onsite security, proximity and biometric access control, and digital security video surveillance.
Network and bandwidth
Get unlimited inbound public and private network bandwidth between global IBM Cloud data centers and 250 GB of public bandwidth with monthly billing.
IBM Cloud Virtual Servers offer advanced reporting, automated operating system (OS) reloads, remote reboot and console access, and Nimsoft monitoring.
With IBM Cloud Virtual Servers, you also get access to IBM Cloud APIs, the IBM Cloud Development Network, digital transcoding and email delivery service.
Varied pricing options
Choose predefined sizes and costs in hourly and monthly billing cycles, multitenant transient virtual servers for on-demand capacity at lower prices, or reserved servers for guaranteed, anytime capacity.
IBM Cloud virtual compute benefits
Get public or dedicated virtual servers and local or SAN storage. Deploy and scale with maximum workload placement. Choose from hourly or monthly options.
Every virtual server is guaranteed, with no oversubscription on core or RAM.
IBM Cloud offers locations around the world to serve your users where they are.
IBM Cloud Virtual Servers for Classic
IBM Cloud Virtual Servers for Classic are our previous-generation virtual machines (VMs) available in all IBM Cloud data centers worldwide.
IBM Cloud Virtual Servers for VPC
IBM Cloud Virtual Servers for VPC provide fast provisioning, high network performance, greater throughput and enhanced isolation.
IBM Power Systems Virtual Servers
IBM Power® Systems Virtual Servers deliver IBM POWER9™ VMs on the IBM Cloud public infrastructure-as-a-service platform.
All virtual compute options
Explore all of the virtual compute options from IBM Cloud and find the right one for your needs.
Service and infrastructure availability
IBM Cloud makes it easy for you to implement, host and scale services, infrastructure and apps so you can focus on your application logic and application design. However, not all services and infrastructure are available for purchase in every IBM Cloud location.
What are virtual servers?
Virtual servers, also called virtual machines (VMs) or virtual private servers, are scalable and come with dedicated core and memory allocations. They're a great option if you're looking for compute resources that can be added in minutes, with access to features like image templates. The hypervisor is fully managed by the IBM Cloud, and you can perform configuration and management tasks by using both IBM Cloud client portal and the API. VMs on classic infrastructures are deployed to the same VLANs as physical servers, enabling you to spread workloads across virtual servers and bare metal servers, while maintaining interoperability. Virtual servers are fully customizable when you order them, with options to scale as your compute needs grow.
IBM Cloud now offers a next-generation virtual private cloud (VPC). IBM Cloud Virtual Servers for VPC is your own protected space in IBM Cloud, providing the advanced security of a private cloud with the agility and ease of a public cloud.
What is the difference between virtual machines and bare metal servers?
Choosing a virtual machine over a physical one, also known as a bare metal server, is less about competing capabilities and more about knowing what you need, when you need it.
Bare metal servers are all about raw hardware, power and isolation. They're single-tenant, physical servers completely void of hypervisor cycles (virtualization software), and entirely dedicated to a single customer — you.
Workloads that highly prioritize performance and seclusion, like data-intensive applications and regulatory compliance mandates, are typically best suited for bare metal servers — especially when deployed over sustained periods of time.
ERP, CRM, SCM, e-commerce and financial services applications are just a few workloads ideal for bare metal servers.
So when would you place a hypervisor on top of the bare metal hardware to make a virtual machine? When your workloads demand maximum flexibility and scalability.
Virtual machines effortlessly drive up server capacity and increase utilization — ideal for moving data from one virtual machine to another, resizing data sets and dividing dynamic workloads.
How does a virtual server work?
When a hypervisor is used on a physical computer or server (also known as bare metal server), it allows the physical computer to separate its operating system (OS) and applications from its hardware. Then, it can divide itself into several independent "virtual machines" or VMs.
Each of these new VMs can then run their own OS and applications independently while still sharing the original resources from the bare metal server, which the hypervisor manages. Those resources include memory, RAM, storage and the like.
The hypervisor acts like a traffic cop of sorts, directing and allocating the bare metal's resources to each of the various new VMs, ensuring they don't disrupt each other.
There are two primary types of hypervisors.
Type 1 hypervisors run directly on the physical hardware (usually a server), taking the place of the OS. Typically, you use a separate software product to create and manipulate VMs on the hypervisor. Some management tools, like vSphere from VMware, let you select a guest OS to install in the VM.
You can use one VM as a template for others, duplicating it to create new ones. Depending on your needs, you might create multiple VM templates for different purposes, such as software testing, production databases and development environments.
Type 2 hypervisors run as an application within a host OS and usually target single-user desktop or notebook platforms. With a Type 2 hypervisor, you manually create a VM and then install a guest OS in it. You can use the hypervisor to allocate physical resources to your VM, manually setting the amount of processor cores and memory it can use. Depending on the hypervisor's capabilities, you can also set options like 3D acceleration for graphics.
For a full overview of hypervisors, check out Hypervisors.
What is a virtual server used for?
VMs have several uses, both for enterprise IT administrators and users. Here are a few options:
- Enable cloud computing: For more than 10 years, VMs have been the fundamental unit of compute in cloud, enabling dozens of different types of applications and workloads to run and scale successfully.
- Support DevOps: VMs are a great way to support enterprise developers, who can configure VM templates with the settings for their software development and testing processes. They can create VMs for specific tasks such as static software tests, including these steps in an automated development workflow. This all helps streamline the DevOps toolchain.
- Test a new operating system: A VM lets you test drive a new OS on your desktop without affecting your primary existing one.
- Investigate malware: VMs are useful for malware researchers that frequently need fresh machines on which to test malicious programs.
- Run incompatible software: Some users may prefer one OS while still needing a program that is only available in another. One good example is the Dragon range of voice dictation software. Its vendor, Nuance, has discontinued the macOS version of its product. However, running a desktop-focused hypervisor — such as VMware Fusion or Parallels — enables you to run Windows in a VM, giving you access to that version of the software.
- Browse securely: Using a VM for browsing enables you to visit sites without worrying about infection. You can take a snapshot of your machine and then roll back to it after each browsing session. This is something a user could set up themselves using a Type 2 desktop hypervisor. Alternatively, an admin could provide a temporary virtual desktop located on the server.
Related IBM Cloud products
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Can IBM Cloud Virtual Servers match your workloads? Provision a public, dedicated, transient or reserved virtual private server and explore the options.