Changes
LXC can use ZFS as completely isolated disk subsystem for CTs
! Feature
! Description
! OpenVZ (stable)
! Virtuozzo 6 (PCS 6)
! VirtuozzoOpenVZ 7! [https://virtuozzo.com/products/virtuozzo-containers/ Virtuozzo 7 Plus]
! LXC
! Proxmox VE
|'''Hypervisor technology'''
|Technology that enables to run Virtual Machines.
|None{{No}}
|Parallels Desktop Monitor
|KVM
|KVM
|None{{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'''
|Linux containers
|LXC (moved from OpenVZ since 4.0)
|None{{No}}|None{{No}}|None{{No}}
|-
!colspan="11" align="left"|1.2. Memory
|{{Yes}}
|{{Yes}}
|{{Yes}}, with new VCMMD memory management|{{Yes}}, with new VCMMD memory management and different policies
|{{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}}
|-
|'''Unified management tool for CTs and VMs'''
|Single tool for managing both containers and virtual machines (if applicable)
|NoneN/A|{{Yes}}|{{Yes}}|{{Yes}}|{{No}}|{{Yes}}|N/A|N/A|N/A|-|'''OpenStack integration'''|Integration with OpenStack components ([http://docs.openstack.org/developer/nova/support-matrix.html see details])|{{Yes}}, only Nova|{{Yes}}
|{{Yes}}
|{{Yes}}
|{{Yes}}
|{{No}}
|None{{Yes}}|None{{Yes}}|None{{Yes}}
|-
|'''Central Management toolIntegrated GUI'''|Is centralized Centralized multi-server management available for this edition?
|{{Yes}}, 3rd party
|{{Yes}}, Parallels Virtual Automation (PVA)
|{{No}}
|{{Yes}}, PVA[https://www.virtuozzo.com/support/all-products/virtuozzo-automator.html Automator]
|{{Yes}}, 3rd party
|{{Yes}}
|-
!colspan="11"|2.2. Upgrade & Backup
|-
|'''Live VE snapshot'''
|{{Yes}}
|{{Yes}}
|Offline, CRIU support is planned{{Yes}}
|{{Yes}}
|{{Yes}}
|{{No}} (only through snapshots)
|{{Yes}}
|{{YesNo}}(only through snapshots, new version is not finished yet)|{{YesNo}}(only through snapshots, new version is not finished yet)
|{{No}} (only through snapshots)
|{{Yes}} (vzdump)
|{{Yes}}
|{{Yes}}
|{{Yes}}
|{{Yes}} (OpenVZ templates)
|{{Yes}}
|{{Yes}}
|{{Yes}}
|{{YesNo}}, 3rd party tools
|{{No}}
|{{No}}, 3rd party tools
!colspan="11"|3.1. VE Mobility
|-
|'''Live Migration of VEs'''
|Ability to migrate virtual machines between hosts without perceived downtime
|{{Yes}}, but with no zero downtime
|{{Yes}}, KernalKernel-Level Migration|{{Yes}}, CRIUfor containers|{{Yes}}, CRIU|Offline, CRIU support is plannedfor containers
|{{Yes}}
|{{Yes}}
|{{Yes}}
|{{Yes}}
|-
!colspan="11"|3.2. HA / DR
|-
|'''Integrated HA'''
|{{Yes}}
|{{Yes}}
|-
!colspan="11" style="font-style:bold;background-color:gold;"|4. Network and Storage
|-
|'''Supported Storage'''
|Supported types of Storage (DAS: Direct Attached Storage, NAS: Network Attached Storage, FC: Fibre Channel, iSCSI, FCoE - Fibre Channel over Ethernetor SAN)
|DAS (EXT4)
|NAS (NFS), DAS (EXT4)
|NAS (NFS), DAS (EXT4)
|NAS (NFS), DAS (EXT4)
|SANDAS, NAS (NFS, ZFS), SAN (iSCSI), Ceph
|DAS, NAS (SMB), 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
|qcow2Qcow2, vmdk, raw
|vhdx, vhd, pass-though (raw)
|Qcow2, raw disk
|{{Yes}}
|{{Yes}}, depends on disk format (dm-thin)
|{{Yes}} (???), depends on underlying storage driver
|{{Yes}}
|{{Yes}}
|{{Yes}}
|-
|'''Virtual SANSoftware-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
|-
|'''Storage QoS'''
|Ability to control Quality of Service for Storage I/O or Throughput for virtual machinesCT/VM|{{NoYes}}|Only IOPs limits|Only IOPs limits|Only IOPs limits{{Yes}}
|{{No}}
|{{Yes}}
|{{No}}
|{{Yes}}, VMs only
|{{Yes}}
|{{Yes}}
|-
!colspan="11"|4.2. Network
|-
|'''Network QoS'''
|{{Yes}}
|-
!colspan="11" style="font-style:bold;background-color:gold;"|5. Others – most of features are relevant only for Odin Virtuozzo editions
|-
|'''Memory deduplication for binary files'''
|{{No}}
|{{Yes}}, pfcache
|{{YesNo}}, pfcache
|{{Yes}}, pfcache
|{{No}}
|{{No}}
|NoneN/A|NoneN/A|NoneN/A
|-
|'''Completely isolated disk subsystem for CTs'''
|{{Yes}}, ploop
|{{Yes}}, ploop
|{{Yes}}, with LVMor ZFS|{{NoYes}}, LVM, ZFS, or loop devices|NoneN/A|NoneN/A|NoneN/A
|-
|'''API\SDK'''
|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)
|None{{No}}|None{{No}}|None{{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
|-
|'''Open Stack integrationPower Panel'''|Driver A tool used for Open Stack Novamanaging particular virtual machines and containers by their end users.|{{YesNo}}
|{{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
|{{Yes}}
|{{No}}
|{{No}}(but there is Open Source edition(oVirt))
|{{No}} (but there is Open Source edition)
|-
|{{Yes}}
|{{No}}
|{{NoYes}}
|{{Yes}}
|{{Yes}}
|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]]
|
|
|-
|}