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Which Virtualization (VPS plan) Suites you the Best for Web Hosting?

  • May 17th, 2016
  • By Anil kumar
  • Blog
  • Before you choose a VPS plan, you are supposed to decide for what purpose you are going to use the server. If it’s for hosting, then you confirm how many sites are planned to host. VPS plan must be chosen, based on the number of websites to be hosted. If your website has huge traffic and if it is hosted on a dedicated server along with thousands of other sites, then it apparently causes issues to the other websites on the server and the hosting provider kicks you out. In this case, you must choose to host your website on the separate dedicated server or on VPS (Virtual Private Server).

    Check different types of virtualizations described below which are most commonly used, and choose the VPS plan that suits your requirement.

    VPS

    A VPS (virtual private server) uses a technology called virtualization, where a physical dedicated server is split up into virtual servers or containers. Each virtual server appears as a dedicated server.

    OpenVZ

    This virtualization platform is based on Linux kernel. We can also say this is an Operating System level virtualization. All resources are shared in this virtualization. OpenVZ can only run Linux based operating system.

    Choose this virtualization if your requirements are as follows:

    • Want to host many WordPress or any other CMS websites on a server and expecting no much traffic or resource usage.

    • Want to host a heavy website and keep the web contents on one VPS, the databases on the second and the mail on the third VPS. With this traffic and the usage can be balanced like a load balancer.

    • You want to resell or oversell the servers. You can oversell the servers as the shared resources and the virtual servers do not use them every time.

    Disadvantage: The kernel cannot be modified. All the servers should use the same kernel version as the physical OS.

    Advantage: As there is no overhead of a hypervisor, it runs very fast. And this is an open source VPS.

    Verdict: We recommend this if you need a fast, efficient and a cost effective VPS solution.

    KVM

    Kernel based Virtual Machine is a full hardware virtualization platform. This supports Windows, Linux and other BSD guests. The physical server should run on a Linux based operating system and should support virtualization extensions (Intel VT or AMD-V) .This is similar to XEN as it supports Para virtualization via the VirtIO framework. Each server has private virtualized network card, disk and graphics adapter, and as OpenVZ, there is no possibility of overselling, you will get the guaranteed resources. Here except CPU and network, all other resources are dedicated to the virtual server just like a dedicated server.

    Choose this virtualization if your requirements are as follows:

    • Want to host a website expecting high traffic.
    • Want a server with dedicated and stable resources.

    Disadvantage: Due to the overhead, as compared to OpenVZ, the performance is not as good as OpenVZ

    Advantage: Cannot be oversold. KVM server has no restrictions in terms of functionality and is more stable than OpenVZ, open source

    Verdict: This virtualization is a lot complex and needs more improvements.

    XEN

    This is a bare metal hypervisor and it makes the physical server run multiple hosts within it. The physical server needs to be run on a Linux based OS, however, it can host virtual servers just like KVM, running on windows, Linux and BSD. The resources are always allocated to the guest virtual servers so all containers act just like a dedicated server. Xen supports both Para virtualization and full virtualization. A Xen system is controlled with Xen hypervisor as the lowest and most confidential layer. One or more guest operating systems are located above this layer.

    Choose this virtualization if your requirements are as follows:

    • Want to host a website expecting high traffic.
    • Want a server with dedicated and stable resources.

    Disadvantage: Could be slow slightly as compared to OpenVZ.

    Advantage: Cannot be oversold. The memory will never be shared.

    Verdict: We would personally recommend this as it delivers the performance in accordance with the price. Amazon and Rackspace both use XEN.

    Conclusion:

    XEN VPS is much simpler, fast and recommended if you are planning to upgrade from a shared web hosting. KVM is a little more complex and OpenVZ is outdated.

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