Post by habiba123820 on Nov 2, 2024 2:13:59 GMT -5
Here is the final article in the hypervisor review series: we have already covered KVM / Proxmox VE , VMware ESXi and Microsoft Hyper-V . Now it's time to review Xen, a less common hypervisor in Russia, although if you count by the number of running virtual machines in the world, it unexpectedly takes first place. This is because there are the well-known Amazon Web Services, under the hood of which is a redesigned Xen (XenProject.org). Which makes our hero a leader in this parameter.
So, away with Xen-phobia in virtualization — pour yourself a thermos of caffeine, and we'll start this longread. Perhaps, soon you too will start working on XenServer or the free fork XCP-ng (Xen Cloud Platform).
What is Xen: About the hypervisor
Xen is a bare-metal hypervisor virtualization wordpress web design agency software. It is based on open source code and is free — GPL licensing model. It supports virtualization on different architectures: x86, x86-64, IA-64, ARM, etc.
The Xen project was born at the University of Cambridge in 2003, and was initially paid, but with the change of owners the distribution model also changed to open source.
Historical background. In the beginning, there was the word, there was the company XenSource and the Xen hypervisor with the XenEnterprise virtualization platform. In 2007, all this goodness came under the wing of Citrix, they developed the hypervisor on their own until Simon Crosby (tech director) and Ian Pratt (founder of XenSource and chief architect of Xen) left the company in 2011. In 2013, they transferred the Xen hypervisor to the Linux Foundation community for development, since then it has lived at xenproject.org (the same guys support KVM). And so Citrix developed their virtualization platform - Citrix XenServer until 2019, then they got bored and renamed it XenServer. In 2022, Citrix announced a merger with Vista TIBCO Software to form the Cloud Software Group (CSG). After the merger, they got bored again, and XenServer spun off from Citrix and became a separate business of CSG. To confuse everyone further, in 2023 they renamed XenServer again to — you won’t believe it — XenServer (without Citrix).
So now it's just XenServer.
You should know that the author also digested this with chamomile tea and other strong toppings.
So, now many cloud solutions are based on the Xen hypervisor, such as Amazon Elastic Compute Cloud (EC2) and Rackspace Cloud. Xen is cross-platform — supported by many control OS: Linux (CentOS, Debian, Fedora, Ubuntu and others), FreeBSD, NetBSD, etc.
Hypervisors in general and Xen in particular allow you to simultaneously run several independent operating systems on a single physical server (host), effectively dividing its resources between different virtual machines (VM). Virtualization simplifies the administration of IT infrastructure, allows you to create clusters (bundles of several servers that work as a single unit), implements VM migration and load balancing between servers in a cluster (between nodes), improves system security and reliability, reduces recovery time after failures (RTO/RPO) and reduces the cost of common ownership.
So, away with Xen-phobia in virtualization — pour yourself a thermos of caffeine, and we'll start this longread. Perhaps, soon you too will start working on XenServer or the free fork XCP-ng (Xen Cloud Platform).
What is Xen: About the hypervisor
Xen is a bare-metal hypervisor virtualization wordpress web design agency software. It is based on open source code and is free — GPL licensing model. It supports virtualization on different architectures: x86, x86-64, IA-64, ARM, etc.
The Xen project was born at the University of Cambridge in 2003, and was initially paid, but with the change of owners the distribution model also changed to open source.
Historical background. In the beginning, there was the word, there was the company XenSource and the Xen hypervisor with the XenEnterprise virtualization platform. In 2007, all this goodness came under the wing of Citrix, they developed the hypervisor on their own until Simon Crosby (tech director) and Ian Pratt (founder of XenSource and chief architect of Xen) left the company in 2011. In 2013, they transferred the Xen hypervisor to the Linux Foundation community for development, since then it has lived at xenproject.org (the same guys support KVM). And so Citrix developed their virtualization platform - Citrix XenServer until 2019, then they got bored and renamed it XenServer. In 2022, Citrix announced a merger with Vista TIBCO Software to form the Cloud Software Group (CSG). After the merger, they got bored again, and XenServer spun off from Citrix and became a separate business of CSG. To confuse everyone further, in 2023 they renamed XenServer again to — you won’t believe it — XenServer (without Citrix).
So now it's just XenServer.
You should know that the author also digested this with chamomile tea and other strong toppings.
So, now many cloud solutions are based on the Xen hypervisor, such as Amazon Elastic Compute Cloud (EC2) and Rackspace Cloud. Xen is cross-platform — supported by many control OS: Linux (CentOS, Debian, Fedora, Ubuntu and others), FreeBSD, NetBSD, etc.
Hypervisors in general and Xen in particular allow you to simultaneously run several independent operating systems on a single physical server (host), effectively dividing its resources between different virtual machines (VM). Virtualization simplifies the administration of IT infrastructure, allows you to create clusters (bundles of several servers that work as a single unit), implements VM migration and load balancing between servers in a cluster (between nodes), improves system security and reliability, reduces recovery time after failures (RTO/RPO) and reduces the cost of common ownership.