Difference between revisions of "Comparison"

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{{Note|This comparison doesn't include Docker, because Docker is not a virtualization solution. It automates the deployment of applications inside software containers, by providing an additional layer of abstraction and automation of operating-system-level virtualization.<ref>[https://en.wikipedia.org/wiki/Docker_(software) Wikipedia article about Docker]</ref>}}
 +
 +
 +
== Disclaimer ==
 +
 +
The information regarding Virtuozzo 7 is provided by [http://www.virtuozzo.com Virtuozzo]. Here is the Virtuozzo's statement regarding this information:
 +
 +
:#The information contained herein is intended to outline general product direction and should not be relied upon in making purchasing decisions.
 +
:#The content is for informational purposes only and may not be incorporated into any contract.
 +
:#The information presented is not a commitment, promise, or legal obligation to deliver any material, code or functionality.
 +
:#Any references to the development, release, and timing of any features or functionality described for these products remains at Virtuozzo’s sole discretion.
 +
:#Product capabilities, timeframes and features are subject to change and should not be viewed as Virtuozzo commitments.
 +
 +
The information regarding all other solutions are taken by authors from public sources only. This information can be changed by any OpenVZ Wiki user without any notice and author's review or approval.
 +
 +
== Feature comparison of different virtualization solutions ==
 +
 
{| class="wikitable sortable"
 
{| class="wikitable sortable"
−
!Parameter
+
! Feature
−
!OpenVZ-legacy
+
! Description
−
!Virtuozzo OpenVZ
+
! OpenVZ
−
!Virtuozzo Commercial
+
! Virtuozzo&nbsp;6 (PCS 6)
−
!Proxmox
+
! OpenVZ&nbsp;7
−
!Citrix Xen
+
! [https://virtuozzo.com/products/virtuozzo-containers/ Virtuozzo&nbsp;7]
−
!Microsoft Hyper-V
+
! LXC
 +
! Proxmox VE
 +
! Microsoft Hyper-V 2012 R2
 +
! RHEV 3.5
 +
! Citrix XenServer 6.5
 +
|-
 +
!colspan="11" style="font-style:bold;background-color:gold;"|1. Virtualization platform
 +
|-
 +
!colspan="11" align="left"|1.1. Overview
 +
|-
 +
|'''HW virtualization support (Hypervisor)'''
 +
|Full emulation of underneath hardware level: full isolation guest environment, no dependencies from host OS, overhead for hypervisor layer.
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
|'''OS-level virtualization (Containers)'''
 +
|Sharing the same instance of host OS: high density, high performance, high dependencies from host OS.
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|-
 +
|'''Hypervisor technology'''
 +
|Technology that enables to run Virtual Machines.
 +
|{{No}}
 +
|Parallels Desktop Monitor
 +
|KVM
 +
|KVM
 +
|{{No}}
 +
|KVM
 +
|Hyper-V
 +
|KVM
 +
|Xen
 +
|-
 +
|'''Windows guest OS additional support'''
 +
|WHQL-signed drivers, SVVP certification
 +
|N/A
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
|'''Containers technology'''
 +
|Technology that enables to run Containers.
 +
|Virtuozzo Containers
 +
|Virtuozzo Containers with enhancements
 +
|Virtuozzo Containers with enhancements
 +
|Virtuozzo Containers with enhancements
 +
|Linux containers
 +
|LXC (moved from OpenVZ since 4.0)
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|-
 +
!colspan="11" align="left"|1.2. Memory
 
|-
 
|-
−
|Virtualization type
+
|'''Memory Overcommit'''
−
|Containers
+
|Ability to present more memory to virtual machines than physically available
−
|Containers and hypervisor
+
|{{Yes}}
−
|Containers and hypervisor
+
|{{Yes}}
−
|Containers and hypervisor
+
|{{Yes}}, with new VCMMD memory management
−
|Hypervisor
+
|{{Yes}}, with new VCMMD memory management and different policies
−
|Hypervisor
+
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 
|-
 
|-
−
|Guest OS support
+
|'''Page sharing'''
−
|Linux
+
|Memory (RAM) savings through sharing identical memory pages across virtual machines
−
|Windows, Linux, FreeBSD (limited support)
+
|{{Yes}}
−
|Windows, Linux, FreeBSD (limited support)
+
|{{Yes}}, only for CTs
−
|Windows, Linux (KVM)
+
|{{Yes}}
−
|Windows, Linux (limited support)
+
|{{Yes}}
−
|Windows, Linux (limited support)
+
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 
|-
 
|-
−
|Unified management tools for CTs and VMs
+
|'''Online Memory Management for VM'''
−
|Yes
+
|Ability to change amount of RAM for CT and VM without reboot
−
|Yes
+
|{{No}}
−
|???
+
|{{No}}
−
|???
+
|{{Yes}}
−
|???
+
|{{Yes}}
−
|???
+
|N/A
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{No}}
 
|-
 
|-
−
|Traffic accounting tools
+
!colspan="11" style="font-style:bold;background-color:gold;"|2. Management
−
|No
 
−
|Yes
 
−
|Yes
 
−
|???
 
−
|???
 
−
|???
 
 
|-
 
|-
−
|Physical-to-Virtual, Container-to-Virtual migration
+
!colspan="11"|2.1. General
−
|No
 
−
|Yes
 
−
|Yes
 
−
|???
 
−
|???
 
−
|???
 
 
|-
 
|-
−
|API
+
|'''Unified management tool for CTs and VMs'''
−
|[https://libvirt.org/drvopenvz.html LibVirt]
+
|Single tool for managing both containers and virtual machines (if applicable)
−
|Yes, [[Virtuozzo_ecosystem#API]]
+
|N/A
−
|Yes, [[Virtuozzo_ecosystem#API]]
+
|{{Yes}}
−
|???
+
|{{Yes}}
−
|???
+
|{{Yes}}
−
|???
+
|{{No}}
 +
|{{Yes}}
 +
|N/A
 +
|N/A
 +
|N/A
 
|-
 
|-
−
|Opensource
+
|'''OpenStack integration'''
−
|Yes
+
|Integration with OpenStack components ([http://docs.openstack.org/developer/nova/support-matrix.html see details])
−
|Yes
+
|{{Yes}}, only Nova
−
|Partially
+
|{{Yes}}
−
|Yes
+
|{{Yes}}
−
|Yes
+
|{{Yes}}
−
|No
+
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 
|-
 
|-
−
|Source code
+
|'''Integrated GUI'''
−
|[https://src.openvz.org/projects/OVZL Yes]
+
|Centralized multi-server management
−
|[https://src.openvz.org/projects/OVZ Yes]
+
|{{Yes}}, 3rd party
−
|[https://src.openvz.org/projects/OVZ Yes]
+
|{{Yes}}, Parallels Virtual Automation (PVA)
−
|[https://git.proxmox.com/ Yes]
+
|{{No}}
−
|[http://www.citrix.ru/go/products/xenserver/xenserver-source-free.html Yes]
+
|{{Yes}}, [https://www.virtuozzo.com/support/all-products/virtuozzo-automator.html Automator]
−
|No
+
|{{Yes}}, 3rd party
 +
|{{Yes}}
 +
|{{Yes}}, System Center Virtual Machine Manager
 +
|{{Yes}}, RHEV Manager
 +
|{{Yes}}, XenCenter
 
|-
 
|-
−
|Support
+
!colspan="11"|2.2. Upgrade & Backup
−
|Yes, community support and [[Support|pay support]]
 
−
|Yes, community support and [[Support|pay support]]
 
−
|Full support
 
−
|Yes
 
−
|Yes
 
−
|Yes
 
 
|-
 
|-
−
|Hosting automation
+
|'''Live VE snapshot'''
−
|???
+
|Ability to take a snapshot of a virtual environment while the guest OS is running (e.g. for roll-back or backup purposes)
−
|???
+
|{{Yes}}
−
|Yes, [http://www.odin.com/kr/products/paci/ PACI], etc
+
|{{Yes}}
−
|???
+
|{{Yes}}
−
|???
+
|{{Yes}}
−
|???
+
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 
|-
 
|-
−
|Shared storage
+
|'''Integrated Backup'''
−
|[[Parallels_Cloud_Storage|Odin Cloud Storage]]
+
|Are backup plugins/tools provided to backup virtual environments (over and above the ability to perform classic backup using agents in the guests)
−
|[[Parallels_Cloud_Storage|Odin Cloud Storage]]
+
|{{No}}
−
|Odin Cloud Storage
+
|{{Yes}}
−
|CEPH
+
|{{No}}
−
|???
+
|{{Yes}}
−
|???
+
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{No}}
 +
|-
 +
|'''Backup Integration API'''
 +
|Integration with 3rd party backup applications for backup of the virtual environment.
 +
|{{No}} (only through snapshots)
 +
|{{Yes}}
 +
|{{No}} (only through snapshots, new version is not finished yet)
 +
|{{No}} (only through snapshots, new version is not finished yet)
 +
|{{No}} (only through snapshots)
 +
|{{Yes}} (vzdump)
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|-
 +
!colspan="11"|2.3. Others
 +
|-
 +
|'''VEs Templates (VM, CT)'''
 +
|Ability to create and store master images and deploy virtual machines from them
 +
|{{Yes}} (CT only)
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}} (OpenVZ templates)
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
|'''P2V migration'''
 +
|Integrated or added P2V (or V2V) capability in order to convert physical systems to virtual environment.
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}, 3rd party tools
 +
|{{No}}
 +
|{{No}}, 3rd party tools
 +
|{{Yes}}
 +
|{{No}}
 +
|{{No}}
 +
|-
 +
!colspan="11" style="font-style:bold;background-color:gold;"|3. VE Mobility and HA
 +
|-
 +
!colspan="11"|3.1. VE Mobility
 +
|-
 +
|'''Live Migration'''
 +
|Ability to migrate virtual machines between hosts without perceived downtime
 +
|{{Yes}}, but with no zero downtime
 +
|{{Yes}}, Kernel-Level Migration
 +
|{{Yes}}, CRIU for containers
 +
|{{Yes}}, CRIU for containers
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
!colspan="11"|3.2. HA / DR
 +
|-
 +
|'''Integrated HA'''
 +
|Recover virtual environment in case of host failures through restart on alternative hosts (downtime = restart time)
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
!colspan="11" style="font-style:bold;background-color:gold;"|4. Network and Storage
 +
|-
 +
!colspan="11"|4.1. Storage
 +
|-
 +
|'''Supported Storage'''
 +
|Supported types of Storage (DAS, NAS or SAN)
 +
|DAS (EXT4)
 +
|NAS (NFS), DAS (EXT4)
 +
|DAS (EXT4)
 +
|NAS (NFS), DAS (EXT4)
 +
|NAS (NFS), DAS (EXT4)
 +
|DAS, NAS (NFS, ZFS), SAN (iSCSI), Ceph 
 +
|DAS, NAS (SMB), SAN (iSCSI, FC, FCoE)
 +
|DAS, NAS (NFS), SAN (iSCSI, FC, FCoE)
 +
|DAS, NAS (NFS), SAN (iSCSI, FC, FCoE)
 +
|-
 +
|'''Virtual Disk Format'''
 +
|Supported format(s) of the virtual disks for the virtual machines
 +
|CT - [[ploop]]
 +
|CT - [[ploop]], VM - [[ploop]]
 +
|CT - [[ploop]], VM - [[ploop]]\Qcow2
 +
|CT - [[ploop]], VM - [[ploop]]\Qcow2
 +
|Any
 +
|Qcow2, vmdk, raw
 +
|vhdx, vhd, pass-though (raw)
 +
|Qcow2, raw disk
 +
|vhd, raw disk
 +
|-
 +
|'''Thin Disk Provisioning'''
 +
|Ability to over-commit overall disk space by dynamically growing the size of virtual disks based on actual usage rather than pre-allocating full size.
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}, depends on disk format (dm-thin)
 +
|{{Yes}}, depends on underlying storage driver
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
|'''Software-defined Storage'''
 +
|Enhanced storage capability  e.g. providing a virtual SAN through virtualized 'local' storage
 +
|{{No}}
 +
|{{Yes}}, Virtuozzo Storage
 +
|{{No}}
 +
|{{Yes}}, Virtuozzo Storage
 +
|{{Yes}}, but 3rd party (DRBD 9, Ceph, GlusterFS)
 +
|{{Yes}}, but 3rd party (DRBD 9, Ceph, GlusterFS, sheepdog)
 +
|{{Yes}}, Storage Spaces
 +
|{{Yes}}, Red Hat Storage
 +
|{{No}}
 +
|-
 +
|'''Storage QoS'''
 +
|Ability to control Quality of Service for Storage I/O or Throughput for CT/VM
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}, VMs only
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
!colspan="11"|4.2. Network
 +
|-
 +
|'''Network QoS'''
 +
|Ability to create and store master images and deploy virtual machines from them
 +
|Only bandwidth limits
 +
|Only bandwidth limits
 +
|Only bandwidth limits
 +
|Only bandwidth limits
 +
|Only bandwidth limits
 +
|{{Yes}}, with Open vSwitch 
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
!colspan="11" style="font-style:bold;background-color:gold;"|5. Others – most of features are relevant only for Virtuozzo editions
 +
|-
 +
|'''Memory deduplication for binary files'''
 +
|Memory and IOPS deduplication management that enables/disables caching for Container directories and files, verifies cache integrity, checks Containers for cache errors, and purges the cache if needed
 +
|{{No}}
 +
|{{Yes}}, pfcache
 +
|{{No}}
 +
|{{Yes}}, pfcache
 +
|{{No}}
 +
|{{No}}
 +
|N/A
 +
|N/A
 +
|N/A
 +
|-
 +
|'''Completely isolated disk subsystem for CTs'''
 +
|
 +
|{{Yes}}, ploop
 +
|{{Yes}}, ploop
 +
|{{Yes}}, ploop
 +
|{{Yes}}, ploop
 +
|{{Yes}}, with LVM or ZFS
 +
|{{Yes}}, LVM, ZFS, or loop devices
 +
|N/A
 +
|N/A
 +
|N/A
 +
|-
 +
|'''API\SDK'''
 +
|
 +
|OpenVZ API for Ruby, LibVirt
 +
|Virtuozzo SDK, [[LibVirt]]
 +
|Virtuozzo SDK, [[LibVirt]]
 +
|Virtuozzo SDK, [[LibVirt]]
 +
|LibLXC, API for Ruby, Python 2, Haskell, Go
 +
|Proxmox VE uses a REST like API (JSON data format)
 +
|Windows SDK
 +
|RHEV-M API: REST API, SDKs
 +
|XenAPI, XenServer SDKs
 +
|-
 +
|'''Image Catalog integration'''
 +
|Integration with 3rd-party image catalog services of popular server applications and development environments that can be installed with one click.
 +
|{{No}}
 +
|{{Yes}} Application Image Catalog [https://virtuozzo.com/introducing-the-virtuozzo-application-catalog/ Virtuozzo Application Catalog]
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|{{Yes}} (Turnkey)
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|-
 +
|'''Kernel update without reboot'''
 +
|Integrated ability to upgrade kernel or install security patches without downtime.
 +
|{{No}}, only 3d party tools
 +
|{{Yes}}, Rebootless Kernel Update
 +
|{{No}}
 +
|{{Yes}} [https://readykernel.com/ ReadyKernel Service]
 +
|{{No}}, only 3d party tools
 +
|{{No}}, only 3d party tools
 +
|N/A
 +
|{{No}}, only 3d party tools
 +
|{{No}}, only 3d party tools
 +
|-
 +
|'''Power Panel'''
 +
|A tool used for managing particular virtual machines and containers by their end users.
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|{{No}}
 +
|-
 +
|'''Secure for using in public networks'''
 +
|
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}<ref name="LXC security">[https://seclists.org/oss-sec/2015/q3/att-171/LxcSecurityAnalysis.txt LXC Security Analysis]</ref>, <ref name="Security issues and mitigations with lxc">[https://wiki.ubuntu.com/LxcSecurity Security issues and mitigations with LXC]</ref>
 +
|{{No}}<ref name="LXC security">[https://seclists.org/oss-sec/2015/q3/att-171/LxcSecurityAnalysis.txt LXC Security Analysis]</ref>, <ref name="Security issues and mitigations with lxc">[https://wiki.ubuntu.com/LxcSecurity Security issues and mitigations with LXC]</ref>
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|-
 +
!colspan="11" style="font-style:bold;background-color:gold;"|6. Commercial
 +
|-
 +
|'''Open Source'''
 +
|
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{No}} (but there is Open Source edition(oVirt))
 +
|{{No}} (but there is Open Source edition)
 +
|-
 +
|'''License\Subscription'''
 +
|
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{No}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}
 +
|{{Yes}}, Enterprise Edition
 +
|-
 +
|'''Support'''
 +
|
 +
|Both community and commercial support
 +
|Commercial support
 +
|Community support
 +
|Commercial Support
 +
|Yes, Canonical Ltd.
 +
|Both community and commercial support
 +
|Commercial support
 +
|Commercial support
 +
|Both community and commercial support
 +
|-
 +
|'''EOL policy'''
 +
|
 +
|[[Releases|5 years of support]]
 +
|[https://virtuozzo.com/support/server-lifecycle/ 7 years of support]
 +
|TBD
 +
|[https://virtuozzo.com/support/server-lifecycle/ 7 years of support]
 +
|
 +
|
 +
|[https://support.microsoft.com/en-us/lifecycle/search/default.aspx?alpha=hyper-v 11 years of support]]
 +
|
 +
|
 
|-
 
|-
−
|Ability to donate
 
−
|[https://openvz.org/Donations Yes]
 
−
|[https://openvz.org/Donations Yes]
 
−
|No
 
−
|[http://pve.proxmox.com/wiki/Show_Your_Support Yes]
 
−
|???
 
−
|???
 
 
|}
 
|}
−
 
−
== Virtuozzo main benefits in comparison to OpenVZ ==
 
−
 
−
* Ability to create Virtual Machines.
 
−
: In addition to Containers, one can create full-scale VMs using a build-in hypervisor. Both Containers and Virtual Machines are managed by the same tools in a uniform way.
 
−
 
−
* Virtuozzo Storage.
 
−
: A resilient and robust way to unify all your local nodes storage into a single highly available SAN-grade distributed storage system.
 
−
 
−
* Higher container density.
 
−
: Virtuozzo provides efficient memory and file sharing mechanisms (VZFS or pfcache) enabling higher container density and better performance of containers.
 
−
 
−
* Unified management tools for CTs and VMs
 
−
: Virtuozzo ships with number of management, monitoring, troubleshooting, and administration tools significantly reducing management, administration, and deployment costs. Specific tools include:
 
−
<ul>
 
−
: <li> [http://www.odin.com/support/virtualization-suite/pva Parallels Virtual Automation]</li>
 
−
: <li> Number of additional CLI tools.</li>
 
−
</ul>
 
−
 
−
* Support and maintenance.
 
−
:Virtuozzo is a commercial product supported and maintained by Odin with options for 24×7 phone support and guarantees on maintenance schedules.
 
−
 
−
* Advanced recovery, monitoring, and back-up tools.
 
−
 
−
* Physical-to-Virtual (P2V) and Virtual-to-Physical (V2P) migration tools.
 
−
: Those tools allow easy conversion of existing physical machines into a container (and vice-versa) facilitating the adoption of virtualized infrastructure.
 
−
 
−
* Common client-server XML-based management API.
 
−
: API allows easily integration of Virtuozzo into existing management infrastructure and development of additional management and monitoring modules.
 
−
 
−
* Traffic accounting tools.
 
−
: These tools enable bandwidth management and control for individual containers and provide additional security mechanisms for containers running on the same host.
 
−
 
−
== Other benefits of Virtuozzo ==
 
−
 
−
* Integration with [http://www.odin.com/products/plesk/ Plesk] solution.
 
−
* Discounts on Plesk licenses.
 
−
* Name-based hosting (no need for public IP for each container).
 
−
* Easy to use installation utility.
 
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== See also ==
 
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- [http://www.stableit.ru/2015/05/technical-comparison-of-openvz-and.html Technical comparison of OpenVZ and commercial Virtualization Platforms from Parallels/Odin]
 

Latest revision as of 06:13, 13 November 2024

Yellowpin.svg Note: This comparison doesn't include Docker, because Docker is not a virtualization solution. It automates the deployment of applications inside software containers, by providing an additional layer of abstraction and automation of operating-system-level virtualization.[1]


Disclaimer[edit]

The information regarding Virtuozzo 7 is provided by Virtuozzo. Here is the Virtuozzo's statement regarding this information:

  1. The information contained herein is intended to outline general product direction and should not be relied upon in making purchasing decisions.
  2. The content is for informational purposes only and may not be incorporated into any contract.
  3. The information presented is not a commitment, promise, or legal obligation to deliver any material, code or functionality.
  4. Any references to the development, release, and timing of any features or functionality described for these products remains at Virtuozzo’s sole discretion.
  5. Product capabilities, timeframes and features are subject to change and should not be viewed as Virtuozzo commitments.

The information regarding all other solutions are taken by authors from public sources only. This information can be changed by any OpenVZ Wiki user without any notice and author's review or approval.

Feature comparison of different virtualization solutions[edit]

Feature Description OpenVZ Virtuozzo 6 (PCS 6) OpenVZ 7 Virtuozzo 7 LXC Proxmox VE Microsoft Hyper-V 2012 R2 RHEV 3.5 Citrix XenServer 6.5
1. Virtualization platform
1.1. Overview
HW virtualization support (Hypervisor) Full emulation of underneath hardware level: full isolation guest environment, no dependencies from host OS, overhead for hypervisor layer. No Yes Yes Yes No Yes Yes Yes Yes
OS-level virtualization (Containers) Sharing the same instance of host OS: high density, high performance, high dependencies from host OS. Yes Yes Yes Yes Yes Yes No No No
Hypervisor technology Technology that enables to run Virtual Machines. No Parallels Desktop Monitor KVM KVM No KVM Hyper-V KVM Xen
Windows guest OS additional support WHQL-signed drivers, SVVP certification N/A Yes No Yes Yes No Yes Yes Yes
Containers technology Technology that enables to run Containers. Virtuozzo Containers Virtuozzo Containers with enhancements Virtuozzo Containers with enhancements Virtuozzo Containers with enhancements Linux containers LXC (moved from OpenVZ since 4.0) No No No
1.2. Memory
Memory Overcommit Ability to present more memory to virtual machines than physically available Yes Yes Yes, with new VCMMD memory management Yes, with new VCMMD memory management and different policies Yes Yes Yes Yes Yes
Page sharing Memory (RAM) savings through sharing identical memory pages across virtual machines Yes Yes, only for CTs Yes Yes Yes Yes No Yes No
Online Memory Management for VM Ability to change amount of RAM for CT and VM without reboot No No Yes Yes N/A Yes Yes No No
2. Management
2.1. General
Unified management tool for CTs and VMs Single tool for managing both containers and virtual machines (if applicable) N/A Yes Yes Yes No Yes N/A N/A N/A
OpenStack integration Integration with OpenStack components (see details) Yes, only Nova Yes Yes Yes Yes No Yes Yes Yes
Integrated GUI Centralized multi-server management Yes, 3rd party Yes, Parallels Virtual Automation (PVA) No Yes, Automator Yes, 3rd party Yes Yes, System Center Virtual Machine Manager Yes, RHEV Manager Yes, XenCenter
2.2. Upgrade & Backup
Live VE snapshot Ability to take a snapshot of a virtual environment while the guest OS is running (e.g. for roll-back or backup purposes) Yes Yes Yes Yes Yes Yes Yes Yes Yes
Integrated Backup Are backup plugins/tools provided to backup virtual environments (over and above the ability to perform classic backup using agents in the guests) No Yes No Yes No Yes Yes No No
Backup Integration API Integration with 3rd party backup applications for backup of the virtual environment. No (only through snapshots) Yes No (only through snapshots, new version is not finished yet) No (only through snapshots, new version is not finished yet) No (only through snapshots) Yes (vzdump) Yes Yes No
2.3. Others
VEs Templates (VM, CT) Ability to create and store master images and deploy virtual machines from them Yes (CT only) Yes Yes Yes Yes (OpenVZ templates) Yes Yes Yes Yes
P2V migration Integrated or added P2V (or V2V) capability in order to convert physical systems to virtual environment. No Yes Yes No, 3rd party tools No No, 3rd party tools Yes No No
3. VE Mobility and HA
3.1. VE Mobility
Live Migration Ability to migrate virtual machines between hosts without perceived downtime Yes, but with no zero downtime Yes, Kernel-Level Migration Yes, CRIU for containers Yes, CRIU for containers Yes Yes Yes Yes Yes
3.2. HA / DR
Integrated HA Recover virtual environment in case of host failures through restart on alternative hosts (downtime = restart time) No Yes No Yes No Yes Yes Yes Yes
4. Network and Storage
4.1. Storage
Supported Storage Supported types of Storage (DAS, NAS or SAN) DAS (EXT4) NAS (NFS), DAS (EXT4) DAS (EXT4) NAS (NFS), DAS (EXT4) NAS (NFS), DAS (EXT4) DAS, NAS (NFS, ZFS), SAN (iSCSI), Ceph  DAS, NAS (SMB), SAN (iSCSI, FC, FCoE) DAS, NAS (NFS), SAN (iSCSI, FC, FCoE) DAS, NAS (NFS), SAN (iSCSI, FC, FCoE)
Virtual Disk Format Supported format(s) of the virtual disks for the virtual machines CT - ploop CT - ploop, VM - ploop CT - ploop, VM - ploop\Qcow2 CT - ploop, VM - ploop\Qcow2 Any Qcow2, vmdk, raw vhdx, vhd, pass-though (raw) Qcow2, raw disk vhd, raw disk
Thin Disk Provisioning Ability to over-commit overall disk space by dynamically growing the size of virtual disks based on actual usage rather than pre-allocating full size. Yes Yes Yes Yes Yes, depends on disk format (dm-thin) Yes, depends on underlying storage driver Yes Yes Yes
Software-defined Storage Enhanced storage capability e.g. providing a virtual SAN through virtualized 'local' storage No Yes, Virtuozzo Storage No Yes, Virtuozzo Storage Yes, but 3rd party (DRBD 9, Ceph, GlusterFS) Yes, but 3rd party (DRBD 9, Ceph, GlusterFS, sheepdog) Yes, Storage Spaces Yes, Red Hat Storage No
Storage QoS Ability to control Quality of Service for Storage I/O or Throughput for CT/VM Yes Yes No Yes No Yes, VMs only Yes Yes Yes
4.2. Network
Network QoS Ability to create and store master images and deploy virtual machines from them Only bandwidth limits Only bandwidth limits Only bandwidth limits Only bandwidth limits Only bandwidth limits Yes, with Open vSwitch  Yes Yes Yes
5. Others – most of features are relevant only for Virtuozzo editions
Memory deduplication for binary files Memory and IOPS deduplication management that enables/disables caching for Container directories and files, verifies cache integrity, checks Containers for cache errors, and purges the cache if needed No Yes, pfcache No Yes, pfcache No No N/A N/A N/A
Completely isolated disk subsystem for CTs Yes, ploop Yes, ploop Yes, ploop Yes, ploop Yes, with LVM or ZFS Yes, LVM, ZFS, or loop devices N/A N/A N/A
API\SDK OpenVZ API for Ruby, LibVirt Virtuozzo SDK, LibVirt Virtuozzo SDK, LibVirt Virtuozzo SDK, LibVirt LibLXC, API for Ruby, Python 2, Haskell, Go Proxmox VE uses a REST like API (JSON data format) Windows SDK RHEV-M API: REST API, SDKs XenAPI, XenServer SDKs
Image Catalog integration Integration with 3rd-party image catalog services of popular server applications and development environments that can be installed with one click. No Yes Application Image Catalog Virtuozzo Application Catalog No No No Yes (Turnkey) No No No
Kernel update without reboot Integrated ability to upgrade kernel or install security patches without downtime. No, only 3d party tools Yes, Rebootless Kernel Update No Yes ReadyKernel Service No, only 3d party tools No, only 3d party tools N/A No, only 3d party tools No, only 3d party tools
Power Panel A tool used for managing particular virtual machines and containers by their end users. No Yes No Yes No No No No No
Secure for using in public networks Yes Yes Yes Yes No[2], [3] No[2], [3] Yes Yes Yes
6. Commercial
Open Source Yes No Yes No Yes Yes No No (but there is Open Source edition(oVirt)) No (but there is Open Source edition)
License\Subscription No Yes No Yes No Yes Yes Yes Yes, Enterprise Edition
Support Both community and commercial support Commercial support Community support Commercial Support Yes, Canonical Ltd. Both community and commercial support Commercial support Commercial support Both community and commercial support
EOL policy 5 years of support 7 years of support TBD 7 years of support 11 years of support]
  1. ↑ Wikipedia article about Docker
  2. ↑ 2.0 2.1 LXC Security Analysis
  3. ↑ 3.0 3.1 Security issues and mitigations with LXC
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