# z/VM

> 64-bit hypervisor and virtual machine-based operating system for IBM mainframes

**Wikidata**: [Q1399696](https://www.wikidata.org/wiki/Q1399696)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Z/VM)  
**Source**: https://4ort.xyz/entity/z-vm

## Summary
z/VM is a 64-bit hypervisor and virtual machine-based operating system for IBM mainframes. It enables multiple virtual machines to run on a single physical mainframe, providing isolation and resource sharing. z/VM is part of IBM's VM family, which evolved from earlier systems like CP/CMS and VM/ESA.

## Key Facts
- z/VM is a 64-bit hypervisor and virtual machine-based operating system for IBM mainframes
- It is developed by IBM, the American multinational technology corporation founded in 1911
- z/VM is part of the VM family, which includes aliases like VM/370, VM/CMS, VM/XA, VM/ESA, CP-40, VM/SP, CP-67, and CP/CMS
- The platform is based on z/Architecture
- z/VM replaces the earlier VM operating system
- It is classified as both an operating system and a hypervisor
- The official website is http://www.vm.ibm.com
- z/VM has a sitelink count of 11 and is available in 9 Wikipedia languages (cs, de, en, fi, he, it, ja, ko, pl, tr)

## FAQs
### Q: What is z/VM?
A: z/VM is a 64-bit hypervisor and virtual machine-based operating system for IBM mainframes. It allows multiple virtual machines to run on a single physical mainframe, providing isolation and resource sharing.

### Q: Who developed z/VM?
A: z/VM was developed by IBM, the American multinational technology corporation founded in 1911.

### Q: What is the relationship between z/VM and VM/CMS?
A: z/VM is part of the VM family, which includes VM/CMS (Conversational Monitor System). VM/CMS is a component of the VM operating system that provides a conversational interface for users.

## Why It Matters
z/VM is significant because it enables efficient utilization of IBM mainframe resources by allowing multiple virtual machines to run on a single physical system. This virtualization technology provides isolation between virtual machines, enhancing security and stability. z/VM plays a crucial role in enterprise computing, supporting mission-critical applications and workloads that require high availability and scalability. By leveraging z/Architecture, z/VM can handle large amounts of memory and processing power, making it suitable for demanding business environments. The ability to run multiple operating systems and applications on a single mainframe reduces hardware costs and simplifies management, making z/VM an essential tool for organizations relying on IBM mainframe infrastructure.

## Notable For
- Being a 64-bit hypervisor and virtual machine-based operating system for IBM mainframes
- Enabling multiple virtual machines to run on a single physical mainframe
- Being part of the VM family, which has a long history dating back to CP/CMS in 1972
- Providing isolation and resource sharing between virtual machines
- Supporting z/Architecture, allowing for large amounts of memory and processing power

## Body
### History and Evolution
z/VM is part of the VM family of operating systems developed by IBM. The family has evolved over time, with earlier versions including VM/370, VM/CMS, VM/XA, VM/ESA, CP-40, VM/SP, CP-67, and CP/CMS. The Conversational Monitor System (CMS), also known as VM/CMS, is a component of the VM operating system that provides a conversational interface for users.

### Technical Specifications
z/VM is a 64-bit hypervisor and virtual machine-based operating system. It is designed to run on IBM mainframes that support z/Architecture. The system enables multiple virtual machines to run on a single physical mainframe, providing isolation and resource sharing between virtual machines.

### Development and Support
z/VM is developed by IBM, the American multinational technology corporation founded in 1911. IBM provides ongoing support and development for z/VM, ensuring compatibility with the latest IBM mainframe hardware and software technologies.

### Applications and Use Cases
z/VM is used in enterprise computing environments where high availability, scalability, and efficient resource utilization are critical. It supports mission-critical applications and workloads that require isolation between different systems or environments. Organizations use z/VM to consolidate multiple workloads on a single mainframe, reducing hardware costs and simplifying management.

### Documentation and Resources
The official website for z/VM is http://www.vm.ibm.com, where users can find documentation, support resources, and information about the latest releases and features. The system is also documented on Wikipedia in multiple languages, including English, German, Japanese, and others.

## References

1. Freebase Data Dumps. 2013