Difference between revisions of "Comparison"

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(Parallels SDK -> Virtuozzo SDK)
(Colorize cells)
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{| class="wikitable sortable"
 
{| class="wikitable sortable"
!Feature
+
! Feature
!Description
+
! Description
!OpenVZ (stable)
+
! OpenVZ (stable)
!Virtuozzo 6 (PCS 6)
+
! Virtuozzo 6 (PCS 6)
!Virtuozzo 7
+
! Virtuozzo 7
!Virtuozzo 7 Plus
+
! Virtuozzo 7 Plus
!LXC
+
! LXC
!Proxmox
+
! Proxmox
!Microsoft Hyper-V 2012 R2
+
! Microsoft Hyper-V 2012 R2
!RHEV 3.5
+
! RHEV 3.5
!Citrix XenServer 6.5
+
! Citrix XenServer 6.5
 
|-
 
|-
 
|'''HW virtualization support (Hypervisor)'''
 
|'''HW virtualization support (Hypervisor)'''
 
|Full emulation of underneath hardware level: full isolation guest environment, no dependencies from host OS, overhead for hypervisor layer.
 
|Full emulation of underneath hardware level: full isolation guest environment, no dependencies from host OS, overhead for hypervisor layer.
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''OS-level virtualization (Containers)'''
 
|'''OS-level virtualization (Containers)'''
 
|Sharing the same instance of host OS: high density, high performance, high dependencies from host OS.
 
|Sharing the same instance of host OS: high density, high performance, high dependencies from host OS.
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
 
|-
 
|-
 
|'''Hypervisor technology'''
 
|'''Hypervisor technology'''
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|'''Memory Overcommit'''
 
|'''Memory Overcommit'''
 
|Ability to present more memory to virtual machines than physically available  
 
|Ability to present more memory to virtual machines than physically available  
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Page sharing'''
 
|'''Page sharing'''
 
|Memory (RAM) savings through sharing identical memory pages across virtual machines
 
|Memory (RAM) savings through sharing identical memory pages across virtual machines
|Yes
+
|{{Yes}}
|Yes, only for CTs
+
|{{Yes}}, only for CTs
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
 
|-
 
|-
 
|'''Unified management tool for CTs and VMs'''
 
|'''Unified management tool for CTs and VMs'''
 
|Single tool for managing both containers and virtual machines (if applicable)
 
|Single tool for managing both containers and virtual machines (if applicable)
 
|None
 
|None
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|None
 
|None
|No
+
|{{No}}
 
|None
 
|None
 
|None
 
|None
Line 101: Line 101:
 
|'''Central Management tool'''
 
|'''Central Management tool'''
 
|Is centralized multi-server management available for this edition?
 
|Is centralized multi-server management available for this edition?
|Yes, 3rd party
+
|{{Yes}}, 3rd party
|Yes, Parallels Virtual Automation (PVA)
+
|{{Yes}}, Parallels Virtual Automation (PVA)
|No
+
|{{No}}
|Yes, PVA
+
|{{Yes}}, PVA
|Yes, 3rd party
+
|{{Yes}}, 3rd party
|Yes
+
|{{Yes}}
|Yes, System Center Virtual Machine Manager
+
|{{Yes}}, System Center Virtual Machine Manager
|Yes, RHEV Manager
+
|{{Yes}}, RHEV Manager
|Yes, XenCenter
+
|{{Yes}}, XenCenter
 
|-
 
|-
 
|'''Update Management'''
 
|'''Update Management'''
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|'''Live VE snapshot'''
 
|'''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)
 
|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}}
 
|Offline, CRIU support is planned
 
|Offline, CRIU support is planned
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Integrated Backup'''
 
|'''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)
 
|Are backup plugins/tools provided to backup virtual environments (over and above the ability to perform classic backup using agents in the guests)
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No
+
|{{No}}
 
|-
 
|-
 
|'''Backup Integration API'''
 
|'''Backup Integration API'''
 
|Integration with 3rd party backup applications for backup of the virtual environment.
 
|Integration with 3rd party backup applications for backup of the virtual environment.
|No (only through snapshots)
+
|{{No}} (only through snapshots)
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No (only through snapshots)
+
|{{No}} (only through snapshots)
|Yes (vzdump)
+
|{{Yes}} (vzdump)
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
 
|-
 
|-
 
|'''VEs Templates (VM, CT)'''
 
|'''VEs Templates (VM, CT)'''
 
|Ability to create and store master images and deploy virtual machines from them
 
|Ability to create and store master images and deploy virtual machines from them
|Yes (CT only)
+
|{{Yes}} (CT only)
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes (OpeVZ templates)
+
|{{Yes}} (OpeVZ templates)
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''P2V migration'''
 
|'''P2V migration'''
 
|Integrated or added P2V (or V2V) capability in order to convert physical systems to virtual environment.
 
|Integrated or added P2V (or V2V) capability in order to convert physical systems to virtual environment.
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No, 3rd party tools
+
|{{No}}, 3rd party tools
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No
+
|{{No}}
 
|-
 
|-
 
|'''Live Migration of VEs'''
 
|'''Live Migration of VEs'''
 
|Ability to migrate virtual machines between hosts without perceived downtime
 
|Ability to migrate virtual machines between hosts without perceived downtime
|Yes, but with no zero downtime
+
|{{Yes}}, but with no zero downtime
|Yes, Kernal-Level Migration
+
|{{Yes}}, Kernal-Level Migration
|Yes, CRIU
+
|{{Yes}}, CRIU
|Yes, CRIU
+
|{{Yes}}, CRIU
 
|Offline, CRIU support is planned
 
|Offline, CRIU support is planned
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Automated Live Migration (DRS)'''
 
|'''Automated Live Migration (DRS)'''
 
|Ability to put host into maintenance mode which will automatically live migrate all virtual machines onto other available hosts so that the host can be brought shut down safely
 
|Ability to put host into maintenance mode which will automatically live migrate all virtual machines onto other available hosts so that the host can be brought shut down safely
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Storage Migration'''
 
|'''Storage Migration'''
 
|Integrated Power Management features Ability to automatically migrate vms onto fewer hosts and power off unused capacity (hosts), wake systems back up when required  
 
|Integrated Power Management features Ability to automatically migrate vms onto fewer hosts and power off unused capacity (hosts), wake systems back up when required  
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Cluster size'''
 
|'''Cluster size'''
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|'''Integrated HA'''
 
|'''Integrated HA'''
 
|Recover virtual environment in case of host failures through restart on alternative hosts (downtime = restart time)
 
|Recover virtual environment in case of host failures through restart on alternative hosts (downtime = restart time)
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Site Failover'''
 
|'''Site Failover'''
 
|Integrated ability to (ideally live) migrate virtual machine data (virtual disk files) to different storage e.g. for array upgrades/migration and I/O management
 
|Integrated ability to (ideally live) migrate virtual machine data (virtual disk files) to different storage e.g. for array upgrades/migration and I/O management
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
 
|Manual
 
|Manual
|No
+
|{{No}}
 
|Integrated Disaster Recovery - manual
 
|Integrated Disaster Recovery - manual
 
|-
 
|-
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|'''Thin Disk Provisioning'''
 
|'''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.
 
|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
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes, depends on disk format (dm-thin)
+
|{{Yes}}, depends on disk format (dm-thin)
|Yes (???)
+
|{{Yes}} (???)
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Virtual SAN'''
 
|'''Virtual SAN'''
 
|Enhanced storage capability  e.g. providing a virtual SAN through virtualized 'local' storage  
 
|Enhanced storage capability  e.g. providing a virtual SAN through virtualized 'local' storage  
|Yes, Virtuozzo Storage
+
|{{Yes}}, Virtuozzo Storage
|Yes, Virtuozzo Storage
+
|{{Yes}}, Virtuozzo Storage
|Yes, Virtuozzo Storage
+
|{{Yes}}, Virtuozzo Storage
|Yes, Virtuozzo Storage
+
|{{Yes}}, Virtuozzo Storage
|Yes, but 3rd party (DRBD 9, Ceph, GlusterFS)
+
|{{Yes}}, but 3rd party (DRBD 9, Ceph, GlusterFS)
|Yes, but 3rd party (DRBD 9, Ceph, GlusterFS)
+
|{{Yes}}, but 3rd party (DRBD 9, Ceph, GlusterFS)
|Yes, Storage Spaces
+
|{{Yes}}, Storage Spaces
|Yes, Red Hat Storage
+
|{{Yes}}, Red Hat Storage
|No
+
|{{No}}
 
|-
 
|-
 
|'''Storage QoS'''
 
|'''Storage QoS'''
 
|Ability to control Quality of Service for Storage I/O for virtual machines
 
|Ability to control Quality of Service for Storage I/O for virtual machines
|No
+
|{{No}}
 
|Only IOPs limits
 
|Only IOPs limits
 
|Only IOPs limits
 
|Only IOPs limits
 
|Only IOPs limits
 
|Only IOPs limits
|No
+
|{{No}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Advanced Network Switch'''
 
|'''Advanced Network Switch'''
 
|Centralized virtual network configuration (rather than managing virtual switches on individual hosts), typically with enhanced networking capabilities
 
|Centralized virtual network configuration (rather than managing virtual switches on individual hosts), typically with enhanced networking capabilities
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|Yes, Open vSwitch support
+
|{{Yes}}, Open vSwitch support
|Yes
+
|{{Yes}}
|Neutron Integration
+
|OpenStack Neutron Integration
 
|Open vSwitch integration
 
|Open vSwitch integration
 
|-
 
|-
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|Only bandwidth limits
 
|Only bandwidth limits
 
|Only bandwidth limits
 
|Only bandwidth limits
|Yes, with Open vSwitch 
+
|{{Yes}}, with Open vSwitch 
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Memory deduplication for binary files'''
 
|'''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
 
|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
+
|{{No}}
|Yes, pfcache
+
|{{Yes}}, pfcache
|Yes, pfcache
+
|{{Yes}}, pfcache
|Yes, pfcache
+
|{{Yes}}, pfcache
|No
+
|{{No}}
|No
+
|{{No}}
 
|None
 
|None
 
|None
 
|None
Line 353: Line 353:
 
|'''Completely isolated disk subsystem for CTs'''
 
|'''Completely isolated disk subsystem for CTs'''
 
|
 
|
|Yes, ploop
+
|{{Yes}}, ploop
|Yes, ploop
+
|{{Yes}}, ploop
|Yes, ploop
+
|{{Yes}}, ploop
|Yes, ploop
+
|{{Yes}}, ploop
|Yes, with LVM
+
|{{Yes}}, with LVM
|No
+
|{{No}}
 
|None
 
|None
 
|None
 
|None
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|'''Image Catalog integration'''
 
|'''Image Catalog integration'''
 
|Integration with 3rd-party image catalog services of popular server applications and development environments that can be installed with one click.
 
|Integration with 3rd-party image catalog services of popular server applications and development environments that can be installed with one click.
|No
+
|{{No}}
|No
+
|{{No}}
|No
+
|{{No}}
|Yes (Bitnami)
+
|{{Yes}} (Bitnami)
|No
+
|{{No}}
|Yes (Turnkey)
+
|{{Yes}} (Turnkey)
 
|None
 
|None
 
|None
 
|None
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|'''Open Stack integration'''
 
|'''Open Stack integration'''
 
|Driver for Open Stack Nova
 
|Driver for Open Stack Nova
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|(LXC and KVM supported through libvirt)
 
|(LXC and KVM supported through libvirt)
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
 
|-
 
|-
 
|'''Kernel maintenance'''
 
|'''Kernel maintenance'''
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|'''Power Panel'''
 
|'''Power Panel'''
 
|A tool used for managing particular virtual machines and containers by their end users.
 
|A tool used for managing particular virtual machines and containers by their end users.
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
 
|None
 
|None
 
|None
 
|None
Line 425: Line 425:
 
|'''Open Source'''
 
|'''Open Source'''
 
|
 
|
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No
+
|{{No}}
|No (but there is Open Source edition)
+
|{{No}} (but there is Open Source edition)
 
|-
 
|-
 
|'''License\Subscription'''
 
|'''License\Subscription'''
 
|
 
|
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|No
+
|{{No}}
|No
+
|{{No}}
|Yes
+
|{{Yes}}
|Yes
+
|{{Yes}}
|Yes, Enterprise Edition
+
|{{Yes}}, Enterprise Edition
 
|-
 
|-
 
|'''Support'''
 
|'''Support'''

Revision as of 10:04, 23 September 2015

Feature comparison of different virtualization solutions

Feature Description OpenVZ (stable) Virtuozzo 6 (PCS 6) Virtuozzo 7 Virtuozzo 7 Plus LXC Proxmox Microsoft Hyper-V 2012 R2 RHEV 3.5 Citrix XenServer 6.5
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. None Parallels Desktop Monitor KVM KVM None KVM Hyper-V KVM Xen
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) None None None
Memory Overcommit Ability to present more memory to virtual machines than physically available Yes Yes Yes Yes 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
Unified management tool for CTs and VMs Single tool for managing both containers and virtual machines (if applicable) None Yes Yes Yes None No None None None
Central Management tool Is centralized multi-server management available for this edition? Yes, 3rd party Yes, Parallels Virtual Automation (PVA) No Yes, PVA Yes, 3rd party Yes Yes, System Center Virtual Machine Manager Yes, RHEV Manager Yes, XenCenter
Update Management Integrated patching mechanism for the virtual environments (Guest OS) / guest tools / templates No integrated update, YUM (Linux) No integrated update, YUM (Linux), WSUS (Windows) No integrated update, YUM (Linux), WSUS (Windows) No integrated update, YUM (Linux), WSUS (Windows) No integrated update, APT (Linux) No integrated update, YUM (Linux), WSUS (Windows) Yes (WSUS, SCCM, Virtual Machine Servicing Tool 2012 for offline VM update) No integrated update, YUM (Linux), WSUS (Windows) No integrated update, YUM (Linux), WSUS (Windows)
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 Offline, CRIU support is planned 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 Yes Yes No (only through snapshots) Yes (vzdump) Yes Yes No
VEs Templates (VM, CT) Ability to create and store master images and deploy virtual machines from them Yes (CT only) Yes Yes Yes Yes (OpeVZ 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 Yes No No, 3rd party tools Yes No No
Live Migration of VEs Ability to migrate virtual machines between hosts without perceived downtime Yes, but with no zero downtime Yes, Kernal-Level Migration Yes, CRIU Yes, CRIU Offline, CRIU support is planned Yes Yes Yes Yes
Automated Live Migration (DRS) Ability to put host into maintenance mode which will automatically live migrate all virtual machines onto other available hosts so that the host can be brought shut down safely No No No Yes No No Yes Yes Yes
Storage Migration Integrated Power Management features Ability to automatically migrate vms onto fewer hosts and power off unused capacity (hosts), wake systems back up when required No No No No No No Yes Yes Yes
Cluster size Maximum number of hosts in the cluster/pool relationship and maximum number vms per cluster/pool (if specified) None 32 hosts/cluster validated (100 hosts/cluster maximum) - PStorage limitation Not tested yet Not tested yet None 32 nodes 64 nodes 200 nodes 16 nodes
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
Site Failover Integrated ability to (ideally live) migrate virtual machine data (virtual disk files) to different storage e.g. for array upgrades/migration and I/O management No No No No No No Manual No Integrated Disaster Recovery - manual
Supported Storage Supported types of Storage (DAS: Direct Attached Storage, NAS: Network Attached Storage, FC: Fibre Channel, iSCSI, FCoE - Fibre Channel over Ethernet) DAS (EXT4) NAS (NFS), DAS (EXT4) DAS (EXT4) NAS (NFS), DAS (EXT4) NAS (NFS), DAS (EXT4) SAN, NAS (NFS), 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 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 (???) Yes Yes Yes
Virtual SAN Enhanced storage capability e.g. providing a virtual SAN through virtualized 'local' storage Yes, Virtuozzo Storage Yes, Virtuozzo Storage Yes, Virtuozzo Storage Yes, Virtuozzo Storage Yes, but 3rd party (DRBD 9, Ceph, GlusterFS) Yes, but 3rd party (DRBD 9, Ceph, GlusterFS) Yes, Storage Spaces Yes, Red Hat Storage No
Storage QoS Ability to control Quality of Service for Storage I/O for virtual machines No Only IOPs limits Only IOPs limits Only IOPs limits No No Yes Yes Yes
Advanced Network Switch Centralized virtual network configuration (rather than managing virtual switches on individual hosts), typically with enhanced networking capabilities No No No No No Yes, Open vSwitch support Yes OpenStack Neutron Integration Open vSwitch integration
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
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 Yes, pfcache Yes, pfcache No No None None None
Completely isolated disk subsystem for CTs Yes, ploop Yes, ploop Yes, ploop Yes, ploop Yes, with LVM No None None None
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 No No Yes (Bitnami) No Yes (Turnkey) None None None
Open Stack integration Driver for Open Stack Nova Yes Yes Yes Yes Yes (LXC and KVM supported through libvirt) Yes Yes Yes
Kernel maintenance Ability to upgrade kernel with minimal downtime. KernelCare service integration kernel rebootless update (vzreboot) KernelCare service integration kernel rebootless update (vzreboot) KernelCare service integration KernelCare service integration None KernelCare service integration KernelCare service integration
Power Panel A tool used for managing particular virtual machines and containers by their end users. No Yes No Yes None None None None None
Open Source Yes No Yes No Yes Yes No No No (but there is Open Source edition)
License\Subscription No Yes No Yes No No 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