Difference between revisions of "Comparison"
(→Feature comparison of different virtualization solutions)
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Revision as of 13:04, 19 September 2018
|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.|
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Feature comparison of different virtualization solutions
|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|
|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||None||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|
|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|
|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|
|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||Yes||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|
|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|
|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||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||None||None||None||None||None|
|Secure for using in public networks||Yes||Yes||Yes||Yes||No, ||No, ||Yes||Yes||Yes|
|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||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|
|EOL policy||5 years of support||7 years of support||TBD||7 years of support||11 years of support]|