Virtual servers

Why IBM mainframe for virtual servers?

Optimal resource sharing between virtual servers can help your enterprise realize up to 100 percent system resource use. IBM z Systems mainframes offer outstanding virtual server density, making it possible to deploy thousands of virtual servers on a single mainframe. IBM mainframe security delivers high levels of isolation and protection of services on virtual servers for greater data integrity. Look to IBM z Systems for industry-leading and proven1 cloud and IT optimization capabilities to reduce the cost of managing and maintaining a proliferation of servers.

Differentiate your cloud services

8,000 virtual servers on a single system offer unparalleled scalability

Benefits of IBM z Systems for virtual servers

IBM mainframe virtualization technologies for virtual servers

New! KVM for IBM z Systems 

Use the combination of KVM virtualization and IBM z Systems for more performance and flexibility to address the requirements of varied Linux workloads. KVM's open source virtualization on IBM z Systems allows businesses to reduce costs, share resources and improve service levels.

z/VM virtualization software

Consolidate and deploy thousands of virtual servers on one mainframe for extreme horizontal scalability, savings potential and resource sharing. z/VM is designed for real time provisioning of virtual servers for diverse workloads in a protected, isolated environment.

IBM Wave for z/VM

Simplify management of virtual Linux servers and z/VM from a single user interface. Deploy cloud infrastructure quickly by identifying and aggregating resources. Gain flexible reporting, support for advanced z/VM capabilities in a few keystrokes, and automation of common virtualization tasks.

Logical partitioning with z Systems (PDF, 13.5MB) 

Divide one physical server into up to 85 logical partitions (LPAR) running a mix of multiple z/OS, z/VM, Linux, Transaction Processing Facility (TPF) and z/VSE instances isolated and secured in parallel. Share resources across LPARs or dedicated to a particular LPAR. Running a mix of multiple z/OS, z/VM, Linux, TPF and z/VSE instances isolated and secured in parallel.

Thousands of virtual servers inside a single z Systems server

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Infrastructure matters. Businesses turn to the IBM mainframe for unmatched security, operational efficiency, speed, seamless scale, and lower cost per transaction. The IBM z System, the world’s premier data and transaction engine, is enabled for mobile, integrates transactions and analytics, and delivers efficient and trusted clouds.

Operating Systems

IBM z Systems supports multiple operation systems:


IBM z Systems combine leading-edge innovation and unparalleled capabilities to power cloud, business analytics, mobile applications, and the most important workloads.

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