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Lxc Vs Kvm Vps Server by pmictltd(m): 7:15pm On Feb 27, 2018
When shared hosting is no longer enough for your current needs and a dedicated server is too expensive or too complex to maintain, a virtual private server becomes the obvious and go-to solution. Unfortunately, when choosing a VPS for your needs, the situation is not that black or white.

There are a few factors you need to take into consideration before you order a VPS such as the operating system, type of virtualization, flexibility and so on.



Disk Size Increase
Fast disk resize: Running on a host operating system, on an LXC container you can resize the virtual disk without an OS reboot and the changes will take place immediately.

Full disk resize: Because the KVM is a fully virtualized machine, the virtual disk can be resized with great ease, but a VPS reboot will be required in order for the changes to take place.

Rebootless Upgrades
Easy upgrades: Being able to upgrade your disk, memory or the number of cores on your VPS without any reboots needed, we strongly recommend this type of VPS when dealing with critical operations and downtime is not possible.

Reboots needed: When dealing with disk, CPU or memory upgrades on a KVM VPS, you have to take into consideration that a reboot will be needed in order for the upgrades to be seen by the system.

Overhead Size
Lower Overhead: Being a container that runs independently on a host operating system that handles most of the system functions, a LXC VPS has a very low overhead and can be booted very fast.

Dedicated OS: Because a KVM is a fully virtualized solution, a larger overhead and a bigger booting period is required in order to boot the operating system and run all the background services.

cPanel compatibility
Not compatible with cPanel: Because cPanel needs a system-wide integration with the host operating system, it can not be installed on LXC containers unless you have good knowledge on how to enable quota on the server.

Manage websites with cPanel: You can install the cPanel Web Hosting control panel on this type of VPS, allowing you to manage all your websites from a web based graphical interface.

Automatic OS installation
Linux operating systems: By using image templates, you can automatically install any Linux OS from our offer, fast and with just one click.

Windows OS Support: In addition to all the Linux operating systems that can be installed on KVM, you can also install FreeBSD and multiple versions of Windows.

Encrypted full disk volumes
Full encryption is limited: For security reasons, on LXC containers, the access to the host resources is restricted and you can’t encrypt the volume on which it runs because the container is isolated.

Encrypt the whole volume: If you want to encrypt the disk volume on which the VPS is running on, being a standalone virtual machine, a KVM VPS will do the job perfectly.

Better price
Great density: Because LXC achieves a density 10 times greater than KVM, we can host more containers on a single server allowing you to host your web applications at a great price.

Fully virtualized machine: You can have a virtual machine that has all the advantages of a dedicated server at a much lower price, on a cloud platform that gives your VPS redundancy.

Swap Space
Manual swap file: You can add and mount manually a swap file but you can’t set it to start with your VPS because the access to the host resources is restricted.

Automatic swap file: Because KVM is a fully virtualized VM, you can add a swap partition and use a swap file just like on a dedicated server.

Dedicated Kernel
Shared Kernel: LXC is an isolated container on a host operating system with a shared kernel, providing a very lightweight solution with a greater density which doesn’t allow for a custom kernel.

Dedicated Kernel: A fully virtualized operating system with dedicated resources which allow for a more stable platform with increased security and the ability to modify or load a custom kernel.

Tun / TAP Enabled
Virtual network devices are not enabled: In order to have the virtual network devices enabled on an LXC container, the host must enable it on all containers, which is not desired because it affects overall performance.

Make a VPN server: You can create a VPN server or enable the virtual network devices for routing purposes or as a network bridge, as the KVM is a fully virtualized dedicated machine.

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