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Content
ZStack provides innovative cloud infrastructure for ten major industries
VMware-to-ZStack Case Collection
The report provides three major
solutions and customer case studies for transitioning from VMware to ZStack.
ZStack Cloud 5.4.0>ZStack Cloud Product Manuals>ZStack Cloud Technical Whitepaper>Core Design>Resource Virtualization
Core Design
Resource Virtualization
Compute Virtualization
Overview
Compute virtualization abstracts physical server resources into logical resources through virtualization technology, enabling a single physical server to function as multiple isolated virtual machines. It pools hardware resources such as CPU, memory, disk, and I/O devices into a virtual resource pool for unified dynamic management. Consequently, it improves resource utilization, reduces system management costs, and increases IT agility to adapt to business changes.
ZStack Cloud adopts a KVM-based hardware virtualization technology. As a Linux kernel module, KVM turns the Linux kernel into a hypervisor. KVM operates as a process within the Linux system and is scheduled by the standard Linux scheduler. As a result, KVM can leverage existing Linux kernel functionalities, such as memory management and CPU scheduling. However, KVM itself only provides CPU and memory virtualization. I/O device virtualization requires QEMU for full functionality. QEMU is a user-mode device emulator that provides virtual device models for VM Instances. It is responsible for creating, calling, and managing various virtual devices.
Technical Features
Next Chapter: Glossary