Virtuozzo (company)

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TypePrivately held company
IndustryComputer software
GenreVirtualization and Storage
HeadquartersSeattle, Washington, USA
ProductsVirtuozzo Containers
Virtuozzo Storage
Virtuozzo Linux
Number of employees
150 (2016)[1]

Virtuozzo is a privately held software company, specializing in virtualization software. It divested from the Parallels company in 2016.[2] Virtuozzo developed the first commercially available operating system-level virtualization container technology in 2000 which was open-sourced in 2005 in the form of OpenVZ.[3]

Company history[edit]

The company was founded in 1997 under the name SWsoft and maintained its headquarters in Herndon, Virginia with additional offices throughout North America, Europe, and Asia. Its research and development offices were located in Moscow, Russia, and it had sales offices in Germany and Singapore. In January 2002, the Virtuozzo 2.0 containers virtualization solution was released. In 2003, SWsoft acquired the makers of Confixx and Plesk web hosting products,[4] and expanded its presence in Germany and Novosibirsk, Russia. In December 2007, after the acquisition of Parallels, Inc., SWsoft company announced its plans to change its name to Parallels and distribute its products under the Parallels brand name.[5]

In December 2015, Virtuozzo spun off and became a standalone company, led by entrepreneur and former Parallels exec Rob Lovell.[6][1] In May 2016, Virtuozzo announced its intention to join the Open Container Initiative[7] and plans to develop dedicated cloud-based servers as well as a specialized Linux distribution.[8] That same month, Virtuozzo launched the Virtuozzo Application Catalog, which was developed in partnership with Bitnami.[9] Virtuozzo announced a strategic partnership with Jelastic in August 2016 to produce Virtuozzo DevOps, an application orchestration platform aimed at mid to large size companies.[10] The company named George Karidis its CEO in November 2016. Karidis previously headed the cloud business unit at CompuCom.[1]

In April 2017, Virtuozzo partnered with to distribute Virtuozzo software through Packet.[11]


Virtuozzo is an operating system-level server virtualization solution designed to centralize server management and consolidate workloads by reducing the number of physical servers required. Organizations use Virtuozzo for server consolidation, disaster recovery, and server workload agility. Virtuozzo does not generate a virtual machine on a host OS like traditional VM software, but instead, it creates isolated virtual private servers (VPSs) on a single physical server. For instance, the software can run multiple Linux VPSs, but not Linux and Windows at the same time on the same server. Each VPS performs exactly like a stand-alone server and can be rebooted independently.[12]

Virtuozzo for Linux became available in 2001 while a version that supports 32- and 64-bit microprocessors became available in 2005.[13][12] In 2002, Virtuozzo proved that the 2.5 version of its software could run 2,500 instances of Red Hat Linux on an eight-processor Dell server. As a result, Intel partnered with Virtuozzo in 2002 to develop a partitioning technology for IA-64 processors.[14]

Linux architectures that support Virtuozzo for Linux are x86, ia64, AMD64, EM64T, and Itanium. Virtuozzo for Linux enables multiple Linux distributions to exist simultaneously on one server.[15] It is based on OpenVZ, a Linux-based OS-level virtualization technology, which allows a physical server to run multiple isolated operating system instances. In 2005, the company updated Virtuozzo to support 64-bit x86 processors.[16] Virtuozzo requires at least a Pentium III server with at least 1 GB of memory and 4 GB available hard drive. Virtuozzo's management tools will be compatible with Microsoft's Viridian and Virtual Server software. Virtuozzo's container staging is processed through the company's container platform OpenVZ.[7][17] Virtuozzo 7, which incorporated an optimized Kernel-based Virtual Machine, was released in July 2016.[18]

In 2012, the company released Virtuozzo Storage, a targeted container storage.[clarification needed] The second version of Virtuozzo Storage was released in 2017.[19]


  1. ^ a b c Dan Rchman (November 8, 2016). "Job No. 1 for Virtuozzo's new CEO: Educating the IT world on the company's unique position". Geek Wire.
  2. ^ "Web Hosting Talk - the largest, most influential web hosting community on the Internet".
  3. ^ Rusanen, Ilya (21 October 2016). "Virtuozzo на пальцах. Интервью с Алексеем Кобцом, вице-президентом по разработке Virtuozzo Ilya Rusanen" (in Russian). Хакере.
  4. ^ SWsoft Buys Plesk, Yippi-Yeah! Automation Firms
  5. ^ "SWsoft to abandon itself and become Parallels". The Register.
  6. ^ "Virtuozzo now an independent company". Virtuozzo.
  7. ^ a b Scott Fulton III (August 4, 2016). "Now On Its Own, Virtuozzo Seeks Container + VM Co-existence". Data Center Knowledge.
  8. ^ Mike Wheatley (May 13, 2016). "Virtuozzo reveals plans to double down on containers". silicon Angle.
  9. ^ "Virtuozzo Partners with Bitnami to Offer Service Providers of All Sizes Access to Major Applications". Venture Beat. May 26, 2016.
  10. ^ "Virtuozzo and Jelastic Join Forces to Create Virtuozzo DevOps". Entertainment Close-up. August 25, 2016. Archived from the original on January 1, 2018.
  11. ^ "Virtuozzo и Packet анонсировали облачный сервис гиперконвергентной инфраструктуры". Tom’s Hardware. 22 July 2017.
  12. ^ a b "Virtuozzo Plays Well With Others". InfoWorld. April 24, 2008.
  13. ^ Virtualized-OS company makes 64-bit change | Tech News on ZDNet
  14. ^ "Intel Taps Linux Developer for IA-63". Computerworld. September 30, 2002.
  15. ^ A Q&A with SWsoft about Virtuozzo - Virtual Strategy Magazine
  16. ^ Virtualized-OS company makes 64-bit change | CNET
  17. ^ Serdar Yrgulalp (July 26, 2016). "OpenVZ 7.0 runs Linux VMs like containers". InfoWorld.
  18. ^ Dan Richman (July 25, 2016). "Virtuozzo's new Kernel-based Virtual Machine for ISPs is a 'huge thing,' years in the making". Geek Wire.
  19. ^ Garry Kranz (April 13, 2017). "DevOps doesn't need stateful containers with storage, but apps dp". Tech Target.