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IBM z/VM

ibm.com

Self-hosted
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Spec score 7.2 #1 of 10 in Mainframe Software

Spec sheet

Purpose
IBM z/VM is an operating system and hypervisor designed to run guest servers including Linux, z/OS, and z/TPF virtual machines on IBM Z and IBM LinuxONE.Read 8 Oct 2026 · ibm.com
Free plan
NoRead 20 Sep 2026 · ibm.com
Integrations
IBM lists Red Hat OpenShift as a supported workload and offers add-ons for managing z/VM and Linux systems.Read 8 Oct 2026 · ibm.com
Headquarters
Armonk, New York, United StatesRead 4 Oct 2026 · ibm.com
Founded
1911Read 4 Oct 2026 · ibm.com
Company
IBM's corporate address is in Armonk, New York, and IBM's history page says its predecessor C-T-R was incorporated in 1911.Read 8 Oct 2026 · ibm.com
Host platforms
IBM Z and LinuxONERead 20 Sep 2026 · ibm.com
Host Secure Boot
z/VM 7.5 can validate signed host IPL code for ECKD and SCSI devices using security keys in the HMC certificate store.Read 8 Oct 2026 · ibm.com
Linux provisioning
Linux is not provided with z/VM and must be obtained from a Linux distribution partner to run as a guest.Read 8 Oct 2026 · ibm.com
Memory management
IBM lists Memory Overcommitment Control among z/VM 7.5 features.Read 8 Oct 2026 · ibm.com
Nested virtualization
YesRead 20 Sep 2026 · ibm.com
Optional licenses
DirMaint, Performance Toolkit, RACF, and RSCS are included in the z/VM 7.4 system image but are installed disabled and require orders to establish licenses before enabling.Read 8 Oct 2026 · ibm.com
Performance monitoring
Performance Data Pump extracts real-time z/VM performance data for visualization and analysis in enterprise observability products.Read 8 Oct 2026 · ibm.com
Platform limits
Each z/VM release runs only on specified IBM Z and LinuxONE servers; z/VM 7.5 lists IBM z16, z17, and LinuxONE Emperor 4, Rockhopper 4, Emperor 5, and Rockhopper 5 models.Read 8 Oct 2026 · ibm.com
Pricing model
IBM describes optional sub-capacity pricing for eligible z/VM programs, which requires IBM License Metric Tool and the z/VM Hypervisor Proxy for ILMT.Read 8 Oct 2026 · ibm.com
Scale
IBM says z/VM can run hundreds to thousands of guest servers on a single IBM Z or IBM LinuxONE server.Read 8 Oct 2026 · ibm.com
Security configuration
The z/VM 7.5 default RACF configuration is set to meet Common Criteria requirements, and some environments may require new CP commands to change security settings.Read 8 Oct 2026 · ibm.com
Service delivery
IBM delivers new z/VM functions through continuous delivery during a release lifecycle.Read 8 Oct 2026 · ibm.com
Systems management
The Single System Image feature coordinates resources across z/VM systems to reduce planned outages and balance workloads.Read 8 Oct 2026 · ibm.com
Workloads
The product supports Linux, hybrid cloud, and containerized workloads.Read 8 Oct 2026 · ibm.com

Plans and prices

IBM z/VM Priced on request Runs on supported IBM Z and IBM LinuxONE servers · optional features require separate orders and licenses Read 8 Oct 2026 · ibm.com

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