Parallels Virtuozzo Containers 4.0
Parallels Virtuozzo Containers 4.0 creates virtual machines in seconds
- Containers take very little space and are very quick to create; Excellent desktop and browser based management tools; Manage both Linux and Windows platforms from one place
- Some aspects of Windows support are a bit behind the Linux version (eg Linux migration is fully live, while Windows will have a short bit of downtime)
The only thing that might put you off is that virtuals are platform-specific - that is, you can only run Linux virtuals on Linux hosts and Windows ones on Windows hosts. But we really don't think that's a huge problem, since the majority of virtualised installations have multiple physical servers anyway - which means you just have to think about what host OS to install on each physical server
When I first came across Virtuozzo Containers 3 a couple of years ago, virtualisation was just beginning to become popular. With the advent of version 4, and of course the massive push so many organisations are making towards virtualisation, now seemed the time to look at the new version of the beast.
Traditionally, virtualisation has been achieved simply by plonking an emulator on top of an operating system, and then plonking another OS on top of the emulator. These days the approaches are much more elegant and efficient, with VMware and Xen/Citrix both moving toward having a "thin" operating system under the emulator instead of a socking great OS.
Virtuozzo Containers takes a different approach, though — and a really very cunning one. It sits on top of a full OS implementation (either Windows or Linux), but rather than presenting virtual machines hosting full "guest" operating systems, it instead simply virtualises the operating system as collections of virtual links. So you only have one copy of the OS installed, and then you define "containers"; each container is a partitioned set of links to the underlying OS APIs and drivers, which lets a number of separate virtual "containers" use a single underlying OS. This means that each container takes up just a few megabytes, as it's not a full OS install; it also means that it takes only a few seconds to add a virtual machine to your server, because all that's involved is making another set of the aforementioned few megs of links.
Virtuozzo runs on Windows (notably WS2003) and Linux (CentOS, Fedora, RHEL and SuSE). Because the "guest" operating systems are just links to the real OS, you can only run Windows virtuals on Windows and Linux virtuals on Linux — but that's really not a problem. Both the Windows and Linux versions run on 32- and 64-bit hardware. Additionally, the Linux 64-bit version can present both 64- and 32-bit virtual entities, while for the moment the 64-bit Windows version can only present its virtuals as 64-bit entities.
To install the system, you obviously need to begin with a suitable host OS. Then you run through the installer, which holds no requirement for a rocket science degree but which does take a while to download patches and updates once the basic package has been installed. Part of the setup process on the Windows version involves the installer configuring some "template" containers, to do which it asks you for the Windows Server CD; we found that it was very unhappy using a virtual CD via an ISO image; copying the files to a folder solved the problem, though.
Once everything's installed, you have two ways to manage Virtuozzo. Option 1 is the Management Console desktop application; option 2 is the new browser-based Parallels Infrastructure Manager ("PIM"), which in fact is the main new feature of the product. Both are completely platform agnostic — that is, you manage your Windows and Linux hosts from the same screens, using the same concepts and wizards. Parallels is making a big deal of the PIM interface, touting it not so much as a Virtuozzo management tool but as a general tool for managing your entire virtual server world — including VMware and Hyper-V. And in fact, we've seen a version of PIM that can also manage servers running Parallels' other virtualisation products. All of the above is for future release, though; the version we actually used in our lab was a Virtuozzo-only tool.
Join the newsletter!
Most Popular Reviews
- 1 Dynabook Portégé X30W-J – a very good all-rounder
- 2 Realme 7 Pro review: Further progress
- 3 Oppo Watch review: A masterclass in imitation
- 4 Google Pixel 5 Review: Soft Reboot
- 5 Google Pixel 4a review: The Goldilocks Google phone
Latest News Articles
- How to set up two-factor authentication for your Apple ID and iCloud account
- How to customize the Safari start page in macOS Big Sur 11.3
- Run Windows 10 on your M1 Mac with Parallels Desktop 16.5
- Got Spotify for desktop? You can now download songs for offline playback
- Amazon's revamped Alexa Voice Remote for Fire TV adds shortcuts to Netflix, Disney+
PCW Evaluation Team
Ultimately this laptop has achieved everything I would hope for in a laptop for work, while fitting that into a form factor and weight that is remarkable.
This smart laptop was enjoyable to use and great to work on – creating content was super simple.
It really doesn’t get more “gaming laptop” than this.
As the Maserati or BMW of laptops, it would fit perfectly in the hands of a professional needing firepower under the hood, sophistication and class on the surface, and gaming prowess (sports mode if you will) in between.
The MSI PS63 is an amazing laptop and I would definitely consider buying one in the future.
This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.
- MSI GS66 Stealth (2021) review: A gaming powerhouse with 300Hz display
- Before We Leave: Non-violent Kiwi game releases on Steam
- 11th-gen 'Tiger Lake H' performance deep-dive: Intel gets back in the game
- Everything you need to know about Smart TVs
- What's the difference between an Intel Core i3, i5 and i7?
- Laser vs. inkjet printers: which is better?